An investigator enrolls men who were college athletes and ar…
An investigator enrolls men who were college athletes and are now 40-59 years old into a study to examine the effectiveness in vitamins intended to decrease muscle loss. The men will be divided into three groups – Group 1 will take Vitamin A, Group 2 will take Vitamin B, and Group 3 will not take any vitamins. What is the dependent variable?
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