Mathematics, 28.02.2020 19:19 vspink9962
The sensitivity is about 0.993. That is, if someone has HIV, there is a probability of 0.993 that they will test positive. • The specificity is about 0.9999. This means that if someone doesn’t have HIV, there is probability of 0.9999 that they will test negative. In the general population, incidence of HIV is reasonably rare. It is estimated that the chance that a randomly chosen person has HIV is 0.000025. To investigate the possibility of implementing a random HIV-testing policy with the Elisa test, calculate the following: a. The probability that someone will test positive and have HIV. b. The probability that someone will test positive and not have HIV. c. The probability that someone will test positive. d. Suppose someone tests positive. What is the probability that they have HIV? In light of the last calculation, do you envision any problems in implementing a random testing policy?
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The sensitivity is about 0.993. That is, if someone has HIV, there is a probability of 0.993 that th...
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