Which of the following tactics will reduce the power of a planned study using a t test for independent means?
A)using a less stringent significance level (such as .10 instead of .05)
B)using more precise measures
C)increasing the size of your samples
D)using unequal sample sizes instead of equal ones (for the same number of participants)

Question

Quizplus · Accepted Answer

Using unequal sample sizes, when the total number of participants remains constant, generally leads to a reduction in the power of a study. Power is the probability that the test will reject a false null hypothesis, and equal sample sizes maximize the efficiency of the test, making it more likely to detect a true effect if there is one.

Which of the Following Tactics Will Reduce the Power of a Planned