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rogenfx
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Homework Statement
in screening for breast cancer, the probability that a mammogram will give a postive result, given that the in dividual has breast cancer is 0.95 (true positive). However the probability of a false positive is 0.1
(a) in a particular population of women, the likelihood of breast cancer is 0.025. obtain the probability that , if test is positive, the woman has breast cancer.
(b) If the result of the test is postitive, another independent test will be done on the same woman. For the same population as in part(a)
(i) what is the probability that both tests are positive?
(ii) if both are positive, what is the probability that the woman does NOT have cancer? what is the probability that she DOES have cancer?
(c) we now look at subset of population-- those women whose mother is known to have cancer.The likelihood of cancer in these women is 0.12. obtain the probability that a positive result indicates that the woman has cancer if her mother had cancer
Homework Equations
The Attempt at a Solution
i am totally have no idea about this cos the example usually talks about 1 test only... not 2 tests... if someone can help that would be nice :)