A researcher conducts two studies.Each study was a one-sample z test.Both studies placed the rejection region in both tails and measured the same sample mean.The alpha level in Study 1 was larger than the alpha level used in Study 2.Which study is associated with greater power to detect an effect?
A)Study 1
B)Study 2
C)They are associated with the same level of power.

Question

Quizplus · Accepted Answer

A larger alpha level increases the rejection region, which increases the power of the test to detect an effect. Therefore, Study 1, with a larger alpha level, is associated with greater power.

A Researcher Conducts Two Studies