Refer to the previous exercise. For young women, the prevalence of breast cancer is lower. Suppose the
Question:
a. Given that a test comes out positive, find the probability that the woman truly has breast cancer.
b. Show how to use a tree diagram with frequencies for a typical sample of 1000 women to explain to someone who has not studied statistics why the probability found in part a is so low.
c. Of the cases that are positive, explain why the proportion in error is likely to be larger for a young population than for an older population.
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Related Book For
Statistics The Art And Science Of Learning From Data
ISBN: 9780321755940
3rd Edition
Authors: Alan Agresti, Christine A. Franklin
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