Question: Most medical tests are not completely accurate.For example, a microscopy test for TB is positive with probability 0.01 when the person tested does not actually

Most medical tests are not completely accurate. For example, a microscopy test for TB is positive with probability 0.01 when the person tested does not actually have TB, and negative with probability 0.2 when the person tested does have TB. Find the probability that a randomly selected individual tests positive under the following conditions.

(a) The frequency of TB in the population is 6%.

(b) The frequency of TB in the population is 20%.

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