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In answering the problem on multiple-choice test a student either knows the answer or guesses it. Let p be probability that she knows the answer, and 1-p the probability that she guesses. Suppose that a student who guesses the answer will be correct with the probability 1/m, where m is the number of multiple choice alternatives. Find out the conditional probability that a student knew the answer to a problem given that she answered it correctly?

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Category:- Statistics and Probability
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