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A hypothesis, which refute or deny the relationship expressed in research hypothesis is called :

  • A.Statistical Hypothesis
  • B.Complex Hypothesis
  • C.Directional Hypothesis
  • D.Null Hypothesis

Answer: D

It is the null hypothesis.

The null hypothesis (H0) states that there is no relationship or no difference between the variables, which denies the relationship the research hypothesis proposes. The statistical test is applied to the null hypothesis, which is either rejected or not rejected.

A directional hypothesis predicts the direction of a relationship, and a complex hypothesis involves more than two variables, so both assert a relationship. 'Statistical hypothesis' is a general name for any hypothesis stated in testable statistical form, not specifically the one that denies the relationship.

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