Which of the following would increase the power of a test?
I. Increase the sample size
II. Decrease the significance level
III. Increase alpha
A) II only
B) I and II
C) III only
D) I and III
E) I only

Question

Quizplus · Accepted Answer

Increasing the sample size and increasing alpha (which means increasing the probability of making a Type I error) would both increase the power of a test. Decreasing the significance level (which means decreasing the probability of making a Type I error) would decrease the power of the test.

Which of the Following Would Increase the Power of a Test