in an exam an examinee either knows or copies or guesses prob of guess 0.35 prob. of copiesis0.20.

Asked by  | 18th Mar, 2008, 10:59: PM

Expert Answer:

Question:

In a test, an examinee either guesses or copies or knows the answer to a multiple choice question with 4 choices.The probability that he makes a guess is 1/3 and the probability that he copies the answer is 1/6.The probability that his answer is correct given that he copied is 1/8.Find the probability that he knew the answer to the question given that he correctly answered it.

Answer:

Answered by  | 27th Mar, 2008, 05:22: PM

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