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R2.30: In hypothesis testing, the Null hypothesis is: A. Influencing the level of significance for the...

R2.30: In hypothesis testing, the Null hypothesis is:

A. Influencing the level of significance for the test

B. Accepted when the test statistic falls within the rejection region

C. Used to calculate the test statistic

D. An assumption that is claimed to be true

Math   Statistics-And-Probability   
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Answer #1

Ans. The correct option is (D), i.e., An assumption that is claimed to be true.

The null hypothesis is denoted by H0 is a statement that the value of a population parameter (such as proportion, mean, or standard deviation) is equal to some claimed value. (The term null is used to indicate no change or no effect or no difference.) We test the null hypothesis H0 directly in the sense that we assume (or pretend) it is true and reach a conclusion to either reject it or fail to reject it.

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