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HippoCampus Statistics & Probability 6 Online
OpenStudy (anonymous):

Suppose that a medical test has a 92% chance of detecting a disease if a person has it, and a 94% chance of correctly indicating that the disease is absent if the person really does not have the disease. Suppose 10% of the population has the disease: a)what is the probability that a randomly chosen person will test positive? b)Suppose a randomly chosen person does test positive. What is the probability that this person really has the disease?

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