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Answer to Question #54752 in Statistics and Probability for Kim
Question #54752
Fred is answering a multiple choice question exam. Each question has n possible answers. If Fred knows the correct answer to a question, he always gets it correct; otherwise he takes a guess, picking any answer with equal probability.
Let K be the event that Fred knows the answer to a question and let R be the event that Fred answers the question correctly. Given P(K) = 3 what is P(R)?
Let K be the event that Fred knows the answer to a question and let R be the event that Fred answers the question correctly. Given P(K) = 3 what is P(R)?
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