Power and Sample Size Calculation - Purdue University
G*Power: t Tests. One Sample . t. Imagine that we are evaluating the effect of a putative memory enhancing drug. We have randomly sampled 25 people from a population known to be normally distributed with a . of 100 and a . of 15. We administer the drug, wait a reasonable time for it to take effect, and then test our subjects’ IQ. ................
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