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Mathematics, 06.05.2020 03:18 lordicy

The ELISA test was an early test used to screen blood donations for antibodies to HIV. A study (Weiss et al. 1985) found that the conditional probability that a person would test positive given they have HIV was 0.979 and the conditional probability that a person would test negative given they did not have HIV was 0.919. The World Almanac gives an estimate of the probability of a person 15 years or older in the United States of America having HIV of 0.005.Suppose a random person is tested and they test positive. What is the conditional probability that this person has HIV given that they test positive

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