James asks his friend Rob for advice on how to increase the power of his experiment.Which of Rob's suggestions is incorrect?
A)use a larger sample size
B)use a less diverse population
C)use a two-tailed instead of a one-tailed test
D)use a more intense experimental manipulation to increase effect size

Question

Quizplus · Accepted Answer

Using a two-tailed instead of a one-tailed test does not increase the power of an experiment. Instead, it is more conservative, requiring more evidence to reject the null hypothesis, as it tests for the possibility of an effect in two directions rather than one.

James Asks His Friend Rob for Advice on How to Increase