Question: 2. (12pts) Suppose that a test for using a particular drug will produce 97% true positive results for drug users and 95% true negative results

2. (12pts) Suppose that a test for using a particular drug will produce 97% true positive results for drug users and 95% true negative results for non-drug users. (The probability that a person tests positive for this drug given that he uses the drug is 97% while the probability that a person tests negative for the drug given that he does not use the drug is 95%). If 0.5% of the general population uses the drug, what is the probability that a randomly selected individual with a positive test uses the drug? You should give your answer in a simplified number

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