Probability that the fixed question is answered correctly

Reference no: EM13151019

Suppose that the probability that the student knows the answer to the question is 0.80 and the probability that the student guesses is 0.20. If student guesses, probability of correct answer is 0.25.

(i) What is the probability that the fixed question is answered correctly?
(ii) If it is answered correctly what is the probability that the student really knew the correct answer.

Reference no: EM13151019

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