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The term (1-B) is called

  • A.Level of the test
  • B.Power of the test
  • C.Size of the test
  • D.None of the above

Answer: B

The term (1 - B) is called the power of the test, where B (beta) is the probability of a Type II error, which is accepting a false null hypothesis. Its complement 1 - B is the probability of correctly rejecting a false null hypothesis.

The level of the test or its size is the probability of a Type I error, which is denoted by alpha, not by 1 - B. Since the power is the correct name, 'None of the above' is wrong.

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