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Assumption that the alternative hypothesis

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Reference no: EM132157450

Which of the following is true? and why the other options are wrong?

a. In a test of hypothesis, when the level of significance (α ) is reduced, the rejection region is reduced in size.

b. If I specify β to be equal to 0.20, then the value of α must be 0.80.

c. In a test of hypothesis, the sampling distribution of the test statistic is calculated under the assumption that the alternative hypothesis is true.

d. A Type I error occurs when we accept a false null hypothesis.

Reference no: EM132157450

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