Rex All Developed What He Thinks Is a Miracle Drug

Rex All developed what he thinks is a miracle drug to cure baldness. He asks you for advice on how to maximize statistical power so that he can "prove" that Hair Today really works. You tell him that the best way to maximize power is to:

A) Increase the sample size
B) Set the alpha level at .10
C) Use a nondirectional hypothesis
D) Use a directional hypothesis

Correct Answer:

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