Question: The probability that a person selected at random from a population will exhibit the clas- sic symptom of a certain disease is .2, and the

The probability that a person selected at random from a population will exhibit the clas- sic symptom of a certain disease is .2, and the probability that a person selected at random has the disease is .23. The probability that a person who has the symptom also has the dis- ease is .18. A person selected at random from the population does not have the symptom. What is the probability that the person has the disease?

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