Using the law of total probability with disease prevalence of 0.5 calculate the probability that a randomly chosen person from the population tests negative for the disease. 2. Using the law of total probability with disease prevalence of 0.5 calculate the probability that a randomly chosen person from the population tests positive for the disease. 3. Using Bayes’ formula with disease prevalence 0.5, find the probability that a patient who tested negative is healthy.

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