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The probability of a randomly selected adult having a particular genetic defect is 0.02. Suppose that...

The probability of a randomly selected adult having a particular genetic defect is 0.02. Suppose that a diagnostic test is available and that the probability an adult who has the genetic defect tests positive is 0.97. There is a small probability, 0.01, that a person who does not have this genetic defect will test positive. What is the probability that a randomly selected adult does not have the genetic defect, given the test was positive?

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