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 statistics q- very imp concept  



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i have a q in which a certain test is done to screen for cancer (lets say ca-125)-the value of the test comes out high (indicates possible cancer)- the sensetivity
and the specificity are given (let's say 80% and 90 %) and they say that 10% of the women population actually has this cancer-what is the likehood that the specific woman has this cancer? how do i calculate this?
thanks in advance!







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