A recent report in which a major pharmaceutical company released the results of testing that had been done on the cholesterol reduction that people could expect if they use the company's new drug indicated that the Type II error probability for a given "true" mean was 0.1250 based on the sample size of n = 64 subjects. Given this, what was the power of the test under these same conditions? The alpha level used in the test was 0.05.
A) 0.95
B) 0.875
C) Essentially zero
D) Power would be undefined in this case since the hypothesis would be rejected.

Question

Quizplus · Accepted Answer

The power of a test is 1 minus the probability of making a Type II error. Given a Type II error probability of 0.1250, the power of the test is 1 - 0.1250 = 0.875.

A Recent Report in Which a Major Pharmaceutical Company Released