PHIL! Jack is hired by a company to see if a new product not yet on the market,
ID: 3525493 • Letter: P
Question
PHIL!
Jack is hired by a company to see if a new product not yet on the market, 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 in group A rub Topocal on their heads everyday, and five hundred men in group B rub water from an unmarked bottle on their heads (a placebo) everyday. After six months, Jack finds that there has been hair growth in 7% of group A, and 2% of group B.
a) What is the control group? b) what is the experimental group? c)what type of study is this? d) is this study statistically significant? . e) What is the target population to which we hope to apply the results of this study ?
Explanation / Answer
A. The control group is the study is Group B, comprising of men who rub water on their heads.
B. The experimental group in the study is Group A, comprising of men who rub Topocal on their heads.
C. This an experimental study with a between subjects prettest posttest design.
D. We cannot conclude if this study is statistically significant unless we compute relevant statistics. However, from the findings, it does not appear to be statistically significant.
E. The target population is balding men.
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