Question

willy will test positive, Pllositi betuistuse sal 7. Imagine that human papillomavirus has a 40% incidence among people 21-30 years of age. A test for the virus has a 50% false negative rate but no false positive rate. If you get a negative test for the virus, what's the chance that you are infected? ay (2

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Answer 1

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R (AIB) = 1 an event A if Here we will use the Baye's theorem of Probability as; PlA= Prob.of A P(A/B) = P(BIA) PIA) 0187 = " B PLB) 1 B is true p(B)A) = Here given that 10 event B - if 40% all towe. incidence of papillomviru on human. For the test , sot false negative Rate & o False positive in - gf we get a negative test for virus; A Negative, test, B a positive text, PlBlah chance of P(B70= P(BIA) · P(A) - 50 x 100 - = 100 x 100 so =(1/2) X100% = 50% 172cer 50% P(A1B)_ :( The chance of infection = 50%