If the type II error in a hypothesis test with is 0.30, then the power of this test is
A)0.05
B)0.30
C)0.70
D)0.95

Question

If the type II error in a hypothesis test with  is 0.30, then the power of this test is
A)0.05 
B)0.30 
C)0.70 
D)0.95

Quizplus · Accepted Answer

The power of a hypothesis test is 1 minus the probability of making a type II error. Therefore, if the type II error is 0.30, the power of the test is 1 - 0.30 = 0.70. Thus, the best choice is C. Power of a test is given by 1 - Type II error. Therefore, power of this test would be 1 - 0.30 = 0.70. Thus, the best choice is C, which is the only option that represents the power value of the test.

If the Type II Error in a Hypothesis Test with