Posted by **mutinda** on Wednesday, September 12, 2012 at 3:27pm.

10. A student is taking a multiple choice test where each question have 5 possible answers of which only one is right. If the student knows the answer the student answers correctly, otherwise there is a 20% probability of correct answer. Assume the student knows 70% of the questions.

a. What is the probability of the student answering a question correct?

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