For a given study, how do each of the following variables affect power?
a. Changing ฮฑ from .05 to .01
INCREASE / DECREASE / NO CHANGE
b. Increasing the sample size
INCREASE / DECREASE / NO CHANGE
c. Increasing the effect size
INCREASE / DECREASE / NO CHANGE
d. Choosing a research hypothesis with a value closer to the null hypothesis
INCREASE / DECREASE / NO CHANGE
e. Changing from a one-tailed test to a two-tailed test
INCREASE / DECREASE / NO CHANGE