A test has power 0.75 when $\mu _ { 1 } = 20$ True or false: the probability of making a correct decision when $\mu _ { 1 } = 20$ is 0.25.

Question

A test has power  0.75  when $\mu _ { 1 } = 20$ True or false: the probability of making a correct decision when $\mu _ { 1 } = 20$ is 0.25.

Quizplus · Accepted Answer

The power of a test, which is 0.75 in this case, represents the probability of correctly rejecting the null hypothesis when $\mu _ { 1 } = 20$. Therefore, the probability of making a correct decision when $\mu _ { 1 } = 20$ is 0.75, not 0.25.

A Test Has Power 0 μ1=20\mu _ { 1 } = 20μ1​=20

A Test Has Power 0 $\mu _ { 1 } = 20$