One way to increase power is to maximize the difference produced by the two conditions in the experiment.How might this be accomplished?
A)Change $\alpha$from 0.05 to 0.01.
B)Change the size of N from 100 to 25.
C)Design and conduct the experiment so that all the subjects in a sample are treated in a consistent manner.
D)Select two very different levels of the independent variable that are likely to produce a relatively large difference between the means.

Question

Quizplus · Accepted Answer

By selecting two very different levels of the independent variable, it is more likely to produce a larger difference between the means of the two conditions, which in turn increases power. This can be achieved by conducting a pilot study or drawing from prior research to determine which levels of the independent variable are likely to produce a large effect size. Changing alpha or the sample size may also affect power, but they are not directly related to maximizing the difference between the two conditions in the experiment. Consistently treating all subjects in the sample will help control for extraneous variables but does not necessarily increase power.

One Way to Increase Power Is to Maximize the Difference α\alphaα

One Way to Increase Power Is to Maximize the Difference $\alpha$