Concept explainers
The value of mammography as a screening test for breast cancer has been controversial, particularly among young women. A study was recently performed looking at the rate of false positives for repeated screening mammograms among approximately 10,000 women who were members of Harvard Pilgrim Health Care, a large health-maintenance organization in New England [9].
The study reported that of a total of 1996 tests given to 40- to 49-year-old women, 156 yielded false-positive results.
Some physicians feel a mammogram is not cost effective unless one can be reasonably certain (e.g., 95% certain) that the false-positive rate is less than 10%. Can you address this issue based on the preceding data? (Hint: Use a CI approach.)
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Chapter 6 Solutions
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