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Abood A.

asked • 11/04/14

What is the conditional probability of this case?

A diagnosis for a test is such that it (correctly) detects the disease in 85% of the individuals who actually have the disease. Also, if a person does not have the disease, the test will report that he or she does not have it with probability 0.80. Only half of one percent or 0.5% of the population has the disease in question. If a person is chosen at random from the population and the diagnostic test indicates that he has the disease, what is the conditional probability that he does, in fact, have the disease?

1 Expert Answer

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Russ P. answered • 11/05/14

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