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MH SET 2018: 28 January, Paper II, Mathematical Sciences

  • Date: 28 January 2018
  • Paper code: JAN30218
  • Series: A
  • Language: Bilingual
  • 28 pages
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Test Booklet Code & Serial No.
                                                                                                                  A
                                          MATHEMATICAL SCIENCE
Signature and Name of Invigilator                                                                 Seat No.
1. (Signature) .........................................                                                   (In figures as in Admit Card)
      (Name) ................................................                    Seat No. ..............................................................
2. (Signature) .........................................                                                   (In words)

      (Name) ................................................                      OMR Sheet No.

JAN - 30218                                                                                   (To be filled by the Candidate)
Time Allowed : 1¼ Hours]                                                                               [Maximum Marks : 100
Number of Pages in this Booklet : 28                                                    Number of Questions in this Booklet : 84
                    Instructions for the Candidates
1.        Write your Seat No. and OMR Sheet No. in the space provided             1.
          on the top of this page.
2.        (a)     This paper consists of Eighty Four (84) multiple choice
                  questions, each question carrying Two (2) marks.                2.      (a)
          (b)     There are three sections, Section-I, II, III in this paper.
          (c)     Students should attempt all questions from Sections I                   (b)
                  and II or Sections I and III.                                           (c)                      I      II            I       III
          (d)     Below each question, four alternatives or responses are
                  given. Only one of these alternatives is the ‘CORRECT’
                  answer to the question.                                                 (d)
          (e)     The OMR sheets with questions attempted from both
                  the Sections viz. II & III, will not be assessed.                       (e)                                                 II      III
3.        At the commencement of examination, the question booklet
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JAN - 30218/II—A




2
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                            Mathematical Science
                                        Paper II
Time Allowed : 75 Minutes]                        [Maximum Marks : 100
Note : Attempt all questions either from Sections I & II or from Sections
       I & III only. The OMR sheets with questions attempted from both
       the Sections viz. II & III, will not be assessed.
       Section I : Q. Nos. 1 to 16,       Section II : Q. Nos. 17 to 50,
       Section III : Q. Nos. 51 to 84.
                 Section I                            3.   The modulus and argument of

                                             6               1
1.   The sequence a n = (–1) n +                            1 i are :
                                             n2
     has :                                                            1     5
                                                           (A)             ,
                                                                          2 4
     (A) no limit point
                                                                      1 3
     (B) one limit point                                   (B)          ,
                                                                       2 4
     (C) two limit points
                                                           (C)        2,
     (D) more than two limit points                                            4

2.   The series :                                                     1     7
                                                           (D)             ,
                                                                          2 4
         x3      x5   x7
     x                     ......., | x| 1                        dz
         3       5     7
                                                      4.                           is :
                                                                 z2       1
     represents the function :
                                                           (A) 2 i
     (A) tan–1 x

     (B) tan x                                             (B) 0

     (C) sin–1 x                                           (C) 4 i

     (D) log (1 + x)                                       (D)        i
                                                  3                                                 [P.T.O.
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5.   If                                           6.   If V denotes the vector space of

                                                       n × n real skew symmetric matrices,

                         1        1   1                then dim V =

                    1
          A =            1            2
                                          ,            (A) n2 – n
                    3
                                  2   4
                         1                             (B) n – 1

                                                              n(n   1)
                                                       (C)
                                                                2
     where              = e2 i/3, then A2 =
                                                              n(n   1)
                                                       (D)
                                                                2
     (A) I
                                                  7.   If


                                                                    1    2   3
     (B) A
                                                              A= 0       3    2 ,

                                                                    0    6   4
                1        0    0

     (C)        0        0    1                        then the rank of the matrix AAt

                                                       is :
                0        1    0

                                                       (A) 1


                0        1    0                        (B) 2

     (D)        1        0    0                        (C) 3

                0        0    1                        (D) 0

                                              4
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                                   9.   Let X be a r.v. with the following
8.   Matrix
                                        F(x),

                1      3   2                          0          ;     x      0
                                                         x
           A= 0        4   2                                     ;     0      x     2
                                         F x             4
                                                         3
                0      3   1                                     ;     2      x     3
                                                         4
                                                      1          ;     x      3
     is similar to :
                                        Which of the following statements
                                        is correct ?
           1    1      0
                                                                     1              2
                                        (A) P[X = 2] =                 , P[X = 3] =
           0    1      0                                             3              3
     (A)
                                                             1
           0    0      2                (B) f(x) =             ; 0     x < 3
                                                             3
                                                                                        1
                                        (C) P[X = 2] = P[X = 3] =
           1    0      0                                                                2
                                        (D) f(x) = 1; 0 < x < 1
           0    1      0           10. Let X be a discrete r.v. with the
     (B)
                                       following pmf :
           0    0      2
                                                     k; x        0,    j; j       1, 2, ..... n
                                    P[X = x] =
           1    0      0                             0 ; otherwise
                                        Let Y = X2, then, P[Y = 4] is :
           0    2      0
     (C)                                      1
                                        (A) 2n 1
           0    0      2
                                                 2
                                        (B) n
                                                     1
           1    0      0
                                                 n
           0    2      1                (C) 2n
                                                      1
     (D)
                                              2
           0    0      2                (D) 2n 1

                               5                                                      [P.T.O.
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11. Let X1 and X2 be jointly distributed
                                                          12. Let X be a r.v. such that variance
     with pdf f(x1, x2) given by :


                                                                        1
                                                              of X is     . Then, an upper bound for
f(x1, x2) =                                                             2


                                                              P[|X – FX| > 1] as given by the
  1
    1   x1 x2 x12   x22   ;   | x1 | 1 and | x2 | 1
  4
           0              ;   otherwise
                                                              Chebychev’s inequality is :



     Then, the characteristic function of

     X1 is :                                                        1
                                                              (A)
                                                                    4

           sin t
     (A)
               t
                                                                    1
                                                              (B)
                                                                    2
           cos t
     (B)
               t


                                                              (C) 1
           sin t
     (C)
               t2


                                                                    3
               t                                              (D)
     (D)                                                            4
           sin t

                                                      6
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13. Let X be a normal random variable
                                             14. The problem :
    with mean 1 and variance 1. Define

    the events :
                                                 Max. : Z = 3x1 + 2x2



          A = {–2 < X < 1},                      Subject to :


                                                         x1 – x2       1,
          B = {–1 < X < 1},

                                                         x1 + x2       3

          C = {0 < X < 2}.
                                                         x1, x2    0


    Which of the following statements
                                                 has :
    is correct ?

                                                 (A) Feasible solution

    (A) P(C) < P(B) < P(A)
                                                 (B) Optimum solution

    (B) P(A) = P(B) < P(C)
                                                 (C) Feasible but not optimum


    (C) P(A) = P(B) = P(C)                           solution


                                                 (D) Unbounded solution
    (D) P(B) < P(A) < P(C)

                                         7                                   [P.T.O.
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15. The set                                                         Section II


     S =      x1 , x2 : 3 x12   2 x22   6            17. Let :


     is a :                                                   f(x) = e–1/x          if x > 0


                                                                   = 0              if x          0,
     (A) Concave

                                                         (A) f(x) is not continuous
     (B) Not concave

                                                         (B) f(x) is continuous but not C1
     (C) Convex

                                                         (C) f(x) is C1 but not C
     (D) Not convex

                                                         (D) f(x) is C       but not analytic
16. If the set of feasible solutions of the

     system AX = B, X           0, is a convex                                            z
                                                     18. The Taylor series for        2           around
                                                                                     z        1
     polyhedron, then at least one of the
                                                         0 is :

     extreme points gives a/an :
                                                         (A) z + z3 + z5 + .......

     (A) Unbounded solution
                                                                   z3        z5
                                                         (B) z –         +        – .......
                                                                   3!        5!
     (B) Bounded but not optimal

                                                         (C) z – z3 + z5 – .......
     (C) Optimal solution

                                                                   z3        z5
     (D) Infeasible solution                             (D) z –         +        – .......
                                                                    3        5
                                                 8
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19. The matrix :                                 21. Which of the following statements

                                                     is not true ?
                1            1
                         0
                2            2
                                                     (A) Every closed and bounded
                0        1   0
                                                            subset of a matric space is
                1            1
                         0                                  compact
                2            2

                                                     (B) Every compact subset of a
    represents :
                                                            metric space is closed and
    (A) rotation by angle        /4 around
                                                            bounded
          x-axis

    (B) rotation by angle        /2 around           (C) A closed subset of a compact set
          y-axis                                            is compact
    (C) rotation by angle        /4 around
                                                     (D) Cartesian product of compact
          y-axis
                                                            sets is compact
    (D) rotation by angle        /8 around
          z-axis                                 22. The function f(x) = |x|3, x         R
20. Let V denote vector space of n × n               is :
    real matrices, having zero trace.
    Then dim V =                                     (A) continuous           but      not

    (A) n – 1                                               differentiable

    (B) n2 – 1                                       (B) differentiable but not c1

    (C) n2 – n
                                                     (C) of class c2
          n(n       1)
    (D)                                              (D) of class c3
             2
                                             9                                      [P.T.O.
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23. f(x) = sin x, x          R
                                                            26. The function f(x) defined as :
    (A) f ( x ) is continuous but not
           uniformly continuous                                 f(x) = 0, if x is irrational

    (B) f(x) is uniformly continuous but                               = 1, if x is rational,
           not Lipschitz
                                                                is :
    (C) f(x) is Lipschitz and uniformly
           continuous                                           (A) Continuous on R
    (D) f(x ) is neither Lipschitz nor
                                                                (B) Continuous at rational points
           uniformly continuous

24. Total variation of the function :                           (C) Continuous at irrational points

                   x3                                           (D) Discontinuous at all points of R
       f(x) =            – x, x   [2, 3]
                    3
                                                            27. sin (x + iy) is equal to :
    is :
    (A) 16/3                                                    (A) sin x sin y + i cos x cos y
    (B) 17/3
                                                                (B) sin x cosh y + i cos x sinh y
    (C) 0
    (D) 13/3                                                    (C) sin x cos y + i cos x sin y

                                           log x                (D) sin x sinh y + i cos x cosh y
25. The maximum value of                           ,
                                            x
    x > 0 is :                                              28. Which of the following complex
    (A) e                                                       numbers are collinear ?
           1
    (B)                                                         (A) 1 + 2i, 2 + 5i, 4 + 11i
           e

                   1                                            (B) 1 – i, 2 + i, 1 + i
    (C) e +
                   e
                                                                (C) i, –1 + 2i, 3 + 4i
               1
    (D)            + e                                          (D) 0, –3 + i, 7 + 8i
            e
                                                       10
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29. Let f(z) be an entire function, then         31. Let f be continuous in an open set

    f(z) is also bounded if and only if :
                                                     D, then        f z dz      0 for each
                                                                C
    (A) f(z) is a polynomial function                piecewise differentiable closed curve

    (B) f ( z ) is the reciprocal of a               C in D if and only if :

         polynomial function
                                                     (A) f is identically zero

    (C) f(z) is a polynomial in sin z and
                                                     (B) f is a polynomial function on D
         cos (z)

                                                     (C) f is a periodic function on D
    (D) f(z) is a constant

                                                     (D) f is an analytic function on D
30. Which of the following complex
                                                                              sin z
    functions has a pole at z = 0 ?              32. The value of                     dz is :
                                                                                z
                                                                    |z|   1

                       3
    (A) f(z) = e1/z                                  (A) 2 i

                           1
    (B) f(z) = sin                                   (B) 0
                           z

                   1       z   2 z3                  (C) 2
    (C) f(z) =         4       7
                       z       z

    (D) f(z) = z3 + 7z + 1                           (D) –2 i

                                            11                                           [P.T.O.
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33. Which of the following rings need           35. Let a be an element of a group G

                                                    such that an = identity, then which
    not have identity ?
                                                    of the following statements is
    (A) The ring of homomorphisms of                true ?

        a vector space to itself                    (A) The order of G is finite

    (B) The ring of automorphisms of                (B) The order of the element a

                                                        is n
        a vector space to itself
                                                    (C) Every subgroup of G of order
    (C) The ring of n × n upper
                                                        n contains a
        triangular matrices over R
                                                    (D) The order of a is finite and

    (D) The ring of polynomials P0[R]                   divides n

        vanishing at origin                     36. Let G be a group of order n and

                                                    H = {a       G|a = a–1}, then which
34. Let m be an even positive integer.
                                                    of the following is true ?
    What is the product of all mth roots
                                                    (A) If the cardinality of H is odd
    of unity in C ?
                                                        then n is odd

    (A) 1                                           (B) The cardinality of H divides n

    (B) –1                                          (C) If the cardinality of H is even

                                                        then n is odd
    (C) i
                                                    (D) The cardinality of H is a power
    (D) –i                                              of two

                                           12
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37. Let G be a non-abelian group with              40. If characteristic equation of matrix
    n elements, then which of the                      A is same as minimum polynomial
    following values of n is possible :                which reads as (x – 1)3 (x – 4), then
                                                       the Jordan canonical form of A
    (A) n = 13
                                                       is :
    (B) n = 9
                                                             1    1     0    0
    (C) n = 10
                                                             0    1     0    0
    (D) n = 15
                                                       (A)
38. Let F be a field with 128 elements,                      0    0     1    0
    then which of the following is
                                                             0    0     0    4
    true ?
    (A) F has a subfield with 8                              1    1     0    0
        elements
                                                             0    1     0    0
    (B) F has no proper non-prime                      (B)
                                                             0    0     4    0
        subfield

    (C) Such a field F does not exist                        0    0     0    4

    (D) F has a subfield with 32                             1    1     0    0
        elements
                                                             0    1     1    0
39. Let T be a linear operator defined                 (C)
    on vector space V. If there exists                       0    0     1    0
    v   V such that v, Tv, ......., Tn – 1v
                                                             0    0     0    4
    are linear independent vectors and
    dim V = n, then :                                        1    1     0    0
    (A) T is invertible
                                                             0    1     0    0
    (B) T is nilpotent                                 (D)
                                                             0    0     1    1
    (C) T is diagonalizable

    (D) for T      0                                         0    0     0    4

                                              13                                    [P.T.O.
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41. Let T be a linear operator defined           43. If P is a 3 × 3 matrix of rank three

    on a vector space V; T : V |      V.             and :

    If dim ker T > 0, then :                                    1     2      3

    (A) 0 is an eigenvalue of T                              A= 4     5      6 ,

    (B) T is invertible                                         7     8      9


    (C) T is nilpotent                               then the rank of PA is :

    (D) Im T = V                                     (A) 1

42. If T(x1, x2) = (–x2, x1), then matrix            (B) 2
    representation of T in the ordered
                                                     (C) 3
    basis {(1, 1)t; (1, –1)t} is :
                                                     (D) Depends upon matrix P
          0           1
    (A)                                          44. If A is a 2 × 2 real matrix with
          1       0

                                                     trace zero and determinant 1, then
           0      1
    (B)                                              the eigenvalues of A are :
              1   0

                                                     (A) real and distinct
          0       1
    (C)
          1       0                                  (B) real and repeated


          1       0                                  (C) complex with non-zero real part
    (D)
          0           1                              (D) purely imaginary

                                            14
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                                                   47. The differential equation obtained
45. The partial differential equation :
                                                       by eliminating the arbitrary
                                                       constants A and              from :
x2uxx – 2xyuxy + y2uyy + xux + yuy = 0
                                                              y = Ae– t sin ( t + )
    is :
                                                       is :

    (A) is hyperbolic if x > 0, y > 0                          d2 y             dy
                                                       (A)                2        +( 2+     2)y = 0
                                                               dt2              dt
    (B) is hyperbolic on R2
                                                           d2 y                dy
                                                       (B)                2t      + ( 2 –    2)y = 0
                                                           dt2                 dt
    (C) is elliptic on R2
                                                           d2 y                 dy
                                                       (C)                2 t      +( 2+     2)y = 0
    (D) is parabolic on R2                                 dt2                  dt

                                                              d2 y              dy
46. The Pfaffian differential equation :               (D)                2 t      + ( 2–    2)y = 0
                                                              dt2               dt

     X · dr = P(x, y, z) dx + Q(x, y, z) dy        48. Let 1, 2 be linearly independent
                                                       solutions of the linear differential
                      + R(x, y, z) dz = 0              equation :

                                                              y + a1y + a2y = 0,
    is integrable if :
                                                       where a1, a2 are constants, then the

    (A) X · X                                          Wronskian W( 1, 2) is constant if
                  0
                                                       and only if :

    (B) X · curl X       0                             (A) a1 = 0

                                                       (B) a1         0
    (C) X · curl X       0
                                                       (C) a2 = 0
    (D) X · X     0                                    (D) a2         0

                                              15                                             [P.T.O.
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49. The differential equation :                                  Section III

                                                   51. The mean height of 10000 children
    (x3 + xy4) dx + 2y3 dy = 0
                                                       of age 6 years is 41.26" and the
                                                       standard deviation is 2.24". Then the
    will become exact on multiplication
                                                       odds against the possibility that the
    by :                                               mean of a random sample of 100 is
                                                       greater than 41.7" is :
             2
    (A) ex
                                                        (A) 1 : 39

    (B) ex                                              (B) 39 : 1
                                                        (C) 1 : 40
    (C) e–x
                                                        (D) 40 : 1
          2
    (D) ex + x                                     52. Which of the following statements
                                                       i s correct about a regression model ?
50. The differential equation :                         (A) Residual sum of squares reduces
                                                            with every new term added in
             Y(4) + sin xy = 0
                                                            the model.

    (A) has      exactly     4     linearly             (B) Residual sum of squares reduces
                                                            with new term added in the
           independent solutions                            model provided the response
                                                            variable is dependent on the
    (B) has      at   most   4     linearly                 new term.
           independent solutions                        (C) Residual sum of squares
                                                            increases with the new term
    (C) has less than 4 linearly                            added in the model.

           independent solutions                        (D) Residual sum of squares
                                                            increases with the new term
    (D) has more than 4 linearly                            added in the model provided the
                                                            response variable is correlated
           independent solutions                            with the new term.
                                              16
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53. Let ( , F, P) be a probability space.        55. L et   {X n }   be   a     sequence         of
    Let {An} be a sequence of events
                                                     independent random variables.
    such that P(An) = 1 for each n     1.
                                                     Define the      -field :
    Then P             An
               n   1                                  F=             Xn, Xn     1 , ........ .
                                                            n   1
    (A) Zero

    (B) One                                          Suppose A        fe. Then, which of the

    (C) Infinity                                     following statements is more

    (D) Not defined                                  appropriate ?

54. Let X be a zero-mean unit variance               (A) P(A) = 0
    Gaussian random variable. Define
                                                     (B) P(A) = 1
    the random variable Y as :
                                                     (C) P(A) = P(AC)
              X        if   |X|
       Y=
                                                     (D) P(A) = 0 or P(A) = 1
               X       if   |X|
                                                 56. If X is a positive random variable
       is some positive real number.
    What is the distribution of X + Y ?              with probability density function f(x),

    (A) Gaussian (0, 1)                              then X–1 has probability density

                                                     function :
    (B) Gaussian (0, 2)

    (C) Not Gaussian, but having                     (A) 1/f(x)

         a   distribution     which    is
                                                     (B) f(1/x)
         discontinuous at origin
                                                     (C) 1/x2 f(1/x)
    (D) Not Gaussian, but a continuous
         distribution                                (D) 1/x f(1/x)

                                            17                                              [P.T.O.
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57. Let X 1 and X 2 be iid random               59. If X is F(m, n) (F-distribution with

                                                    m and n degrees of freedom) and Y
    variables with distribution function

                                                    is F(n, m), given that P[X    c] = a
    F(x). Then, P(X1      X2) is :
                                                                  1!
                                                    then P " Y         is :
                                                           $      c #%
    (A) 1/3
                                                    (A) a

    (B) 2/3
                                                    (B) 1


    (C) 1/2                                               a
                                                    (C)
                                                          2

    (D) 3/2                                         (D) 1 – a


                                                60. If X is distributed as Binomial
58. Let X be a r.v. with U(– , ). The

                                                    (n, p), 0 < p < 1, then :
    distribution of Y = X2 is :

                                                    (A) –X is distributed B(–n, p)
    (A) U(0, )
                                                    (B) n – X is distributed B(n, 1 – p)

    (B) U(0, 2)
                                                    (C) X – k is distributed B(n – k, p),
                 y½
    (C) f(y) =        ; 0 < y <                           when k is constant
                 2

                                                          1                        1
    (D) f(y) = (2 ) y–½; 0 < y <     2              (D)     is distributed as B n,
                                                          X                        p
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61. Suppose X and Y are independent
                                                                          63. Let X1, X2, .......... Xn be a random
     r.v.’s such that :
                                                                              sample from Poisson distribution
                        e xx                 1
           f(x) =                                ; x > 0,     > 0
                                                                              with parameter ). Then covariance
                        e y y&               1
           f(y) =                                ; y > 0, & > 0               between X and (X1 – X2) is :
                                 &

                                                  X
     The distribution of                             is :                     (A) 1/2
                                                 X+Y
     (A) Beta ( , &)
                                                                              (B) 1
     (B) Gamma (                     + &, 1)
     (C) Beta ( ' ' &,                       ' ' &)                           (C) –1
     (D) Gamma ( &, 1)
62. Let X1, X2, .......... Xn be iid r.v.’s                                   (D) 0
     from an exponential distribution
     with mean . Then the distribution                                    64. Based on a random sample of size

                                             n
                                                                              n from N(*, 2), where * is known
     of X1 given T =                      (  1
                                                 Xi

                                                                              and variance is unknown, sufficient
                                             n    3
            n     2 t                x1
     (A)                                              ; 0 < x1 < t            statistic for * is :
                        tn       2

                             n       1
     (B)
           n t      x1
                    t   n
                                          ; 0 < x1 < t                        (A)   (X   i



            n    1 t                 x1
                                             n    2                           (B)   ( X ,( X
                                                                                         2
                                                                                         i           i
     (C)                                              ; 0 < x1 < t
                        tn       1
                                                                              (C) X n
                                 n       1
           n· t             x1
     (D)            n
                        , tn
                                             ; 0 < x1 < t                     (D)   (X   2
                                                                                         i


                                                                     19                                     [P.T.O.
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65. Let X1, X2, .......... Xn be a random            67. Let X1, X2, .......... Xn be a random
    sample of size n from Poisson                         sample of size n from U(0, ). Define
    distribution with mean ). The log                     T1 = X(n) and T2 = X n . Then :
    likelihood function L()|x1, x2, ..... xn)
                                                          (A) T1 is UMVUE and T2 is not
    is :
                                                                 unbiased estimator for
    (A) constant in )
                                                          (B) T2 is UMVUE for                 /2
    (B) monotonic function of )
                                                                  n       1                    n       1
    (C) concave function of )                             (C)
                                                                      n
                                                                               T1 – 2T2 and
                                                                                                   n
                                                                                                           T1

    (D) convex function of )                                     are correlated

66. Let X be a Bernoulli r.v. with                                n       1                    n       1
                                                          (D)                  T1 – 2T2 and                T1
    parameter       . Suppose we wish                                 n                            n
    to test H 0 :         = 1/3 against                          are uncorrelated
    H1 :       = 2/3, based on random                68. Let X1, X2, .........., Xn be a random
    sample of size 1. Then :                              sample observed from exponential

    (A) there exists infinitely many                      distribution with location parameter

           most powerful tests of size 0.05                . For testing H0 :            =    0 against
                                                          H1 :        >       0, the UMP test rejects
    (B) there exists unique non-
                                                          H0, if :
           randomized most powerful test
           of size 0.05                                   (A) X > C

                                                          (B) X(1) > C
    (C) there exists unique randomized
           most powerful test of size 0.05                (C) X(n) > C

    (D) the most powerful test rejects                    (D) + (Xi – X(1)) > C

           H0, if X = 0 is observed                       where C is to be chosen suitably.
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69. If r12.3 is the correlation coefficient          70. The manager of a cyber cafe says


     between the variables X1 and X2                     that number of customers visiting on


     after eliminating the linear effect of              week days followed a Binomial


     X3, then which of the following are                 distribution. Which one of the


     correct ?                                           following techniques can be used to


     (1) –1      r12.3   1                               test the hypothesis at a given level


     (2)     2 + 2 + 2 – 2r r r
           r12  r13 r23                    1             of significance ?
                           12 13 23



     (3)     2
           r12.3 = b12.3 b21.3, where b’s are            (A) Test of significance of mean


           partial regression coefficients               (B) Test of significance of difference


     (A) (1) and (2) only                                    of means



     (B) (1) and (3) only                                (C) Chi-square test as a test of


     (C) (2) and (3) only                                    goodness-of-fit



     (D) (1), (2) and (3)                                (D) Correlation analysis

                                                21                                     [P.T.O.
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71. In a normal population N(*,       2)        72. Consider the 2 × 2 contingency table


    with     2 = 4, in order to test the            on two attributes A and B :


    null hypothesis * = * 0 against
                                                                  A1      A2

                                                           B1     10      20
    H1 : * = *1, where *1 > *0 based
                                                           B2     30      40

    on a random sample of size n ,

                                                    What is the value of ,2 for testing
    the value of K such that X > K


                                                    the independence of the attributes
    provides a critical region of size


                                                    A and B ?
      = 0.05 is :



    (A) *0                                          (A) 0.645
               1.645   n


    (B) *0     3.290       n                        (B) 0.794



    (C) *0     1.96    n                            (C) 0.812



    (D) *0     3.92    n                            (D) 0.853

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73. The following is an arrangement
                                               74. In an ANOVA for an experimental

    of men (M) and women (W), lined

                                                   design involving 3 treatments and
    up to purchase tickets for a rock


    concert :
                                                   10 observations per treatment, if

MWMWMMMWMWMMMWWMMMMWW

                                                   SSE = 399.6, then the estimated
MWMMMWMMMWWW


    What is the expected value of runs             variance of error term is :


    for testing the hypothesis that the
                                                   (A) 133.2
    arrangement is random ?


    (A) 14.92                                      (B) 87.8



    (B) 15.88
                                                   (C) 66.6

    (C) 16.76


                                                   (D) 14.8
    (D) 18.20

                                          23                                     [P.T.O.
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75. If orders are placed with the size         77. In usual notations of queueing

    determined by the economic order               systems, which of the following

    quantity,   the   re-order   costs             relationships is not true ?

    component is :                                                     1
                                                   (A) Ws = Wq +
                                                                       *
    (A) equal to the holding cost
                                                   (B) Ls = )Ws
        component
                                                   (C) Lq = )Wq
    (B) greater than the holding cost

                                                   (D) Ls = Lq + 1/)
        component


    (C) less than the holding cost             78. For any primal problem and its

        component                                  dual :


    (D) either greater or less than the            (A) optimal value of objective

        holding cost component                         function is same

76. Gantt chart is used to solve the :             (B) primal will have an optimal

    (A) Job sequencing problems                        solution iff dual does


    (B) Inventory problems                         (C) both primal and dual can not

    (C) Replacement problems                           be infeasible


    (D) All of the above                           (D) optimal solution does not exist

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79. The payoff value for which each               81. If - wsy denotes the intra-class

    player in a game always selects the
                                                      correlation coefficient between pairs

    same strategy is known as :
                                                      of units that are in the same

    (A) saddle point
                                                      systematic sample and if -wsy = 0,

    (B) equilibrium point
                                                      then :

    (C) both (A) and (B)
                                                      (A) Systematic sampling is as

    (D) none of the above
                                                          efficient as SRSWOR

80. The number of non-negative
                                                      (B) Systematic sampling is more
    variables in a basic feasible solution
                                                          efficient than SRSWOR
    to a m × n transportation problem

    is :                                              (C) Systematic sampling is as


    (A) m + n – 1                                         efficient as SRSWR but less


                                                          efficient than SRSWOR
    (B) mn


    (C) m + n                                         (D) Systematic sampling is more


    (D) m + n + 1                                         efficient than SRSWR

                                             25                                     [P.T.O.
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82. For an SRSWOR (N, n ), the                  84. Identify the treatments x1, x2, x3

    probability that a specified unit is
                                                    and x 4 from blocks 1, 2, 3, 4
    included in the sample is :
                                                    respectively so that the design is
        1
    (A)
        N
                                                    BIBD :
           n
    (B)
           N
                                                    Block 1 : A, B, C, x1
                1
    (C)     N
                Cn
                                                    Block 2 : A, x2, C, E

           1
    (D) N N 1
                                                    Block 3 : A, B, D, x3

83. In a 25 factorial design in block of
                                                    Block 4 : A, x4, D, E
    8 plots each, total number of

    interaction confounded with blocks              Block 5 : B, C, D, E


    is :
                                                    (A) x1 = B, x2 = E, x3 = C, x4 = D

    (A) 2
                                                    (B) x1 = D, x2 = B, x3 = E, x4 = C
    (B) 7
                                                    (C) x1 = C, x2 = D, x3 = B, x4 = E
    (C) 3

                                                    (D) x1 = E, x2 = C, x3 = D, x4 = B
    (D) 4

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ROUGH WORK




    27                 [P.T.O.
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ROUGH WORK




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Source: Savitribai Phule Pune University. Question paper published by Savitribai Phule Pune University.