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Question
Johnson is hired by a company to see if a new product, Topocal, will cause hair to grow on the heads of bald men. He recruits one thousand bald men and randomly divides them into two groups: Five hundred men (group A) rub Topocal on their scalps each day; the other five hundred (group B) rub a standard skin lotion on their scalps each day. After two months, Johnson checks to see what the results have been. He finds that there has been hair growth in 7 percent of group A and in 2 percent of group B.
The category that best fits this study is
A. prospective observational study.
B. retrospective observational study.
C. randomized controlled experiment.
Answer
This answer is hidden. It contains 2 characters.
Related questions
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Evaluate the following argument in accordance with the criteria discussed in the text.
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Evaluate the following argument in accordance with the criteria discussed in the text.
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