Answered: Suppose an investigator is looking at…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose an investigator is looking at age at menarche (first period) and its relationship to the onset of breast cancer in women. The investigator conducted a thorough literature review and wanted to test out the hypothesis that women with an earlier menarche are less likely to develop breast cancer. Suppose the investigator conducted a population based study and found that the average age at menarche was 12.3 years with a standard deviation of 1.3 years. Assuming the investigator finds that women in the highest 10% of the distribution have a relative risk of 1.4 for developing breast cancer. What age at menarche correlates to this percentile? (Hint: highest 10% means 90th percentile)

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