probaility
posted by jim .
Of all 40yearold women, 1% have breast cancer. If a woman has breast cancer, a mammogram will give a positive indication for cancer 90% of the time. If a woman does not have breast cancer, a mammogram will give a positive indication for cancer 9% of the time. If a 40yearold womanâ€™s mammogram gives a positive indication for cancer, what is the probability that she has cancer?
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