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Setting up problems

You're testing for a disease and advertising that the test is 99% accurate; that is if you have the disease, you will test positive 99% of the time, and if you don't have the disease, you will test negative 99% of the time. Let's say that 1% of all people have the disease and someone tests positive. What's the probability that the person has the disease? Select the correct set up for this problem.

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