MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The drug Finasteride is marketed as Propecia to help protect against male pattern baldness, and it also may protect against prostate cancer. A large sampleof healthy men over age 55 were randomly assigned to receive either a daily Finasteride pill or a placebo. The study lasted seven years and the men had annual check-ups and a biopsy at the end of the study. Prostate cancer was found in 804 of 4368 men taking Finasteride and in 1145 of the 4692 men taking a placebo.                                                                                                                                                               A 95% confidence interval for the risk difference (proportion of subjects on Finasteride who develop cancer - proportion of subjects on placebo who develop cancer) is (-0.077, -0.043).  Does this confidence interval provide evidence of an association between development of cancer and taking Finasteride?  Briefly justify your response.

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