Suppose you carry out a study using a t test for independent means. The number of participants in each group is 50 and you conduct a two-tailed test. What would be the approximate level of power if you anticipated a small effect size? (Consult the power table 9-4.)
A) .53
B) .80
C) .60
D) .17

Question

Quizplus · Accepted Answer

The power table shows that with a sample size of 50 per group and a two-tailed test, the power for a small effect size is approximately .17.

Suppose You Carry Out a Study Using a T Test