Suppose you work for a lab which develops many pharmaceutica…
Suppose you work for a lab which develops many pharmaceutical products. Your division has discovered a new drug that you believe cures male pattern baldness. Before you can start selling the drug, you must demonstrate it is effective to the U.S. Food and Drug Administration. You design an experiment with 500 men, who have been diagnosed with male pattern baldness. They are divided up into two groups, group A men receiving the drug, while group B men receive a placebo. In this study, the men receive the drug of a placebo once a day. All of the men will have the number of hairs per square inch of scalp measured in a clinic once per week. What is the experimental (independent) variable?