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You estimate that you know 80% of the material for this exam. That is to say that for any multiple choice question there is an

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You estimate that you know 80% of the material for this exam. That is to say that for any multiple choice question there is an 80% chance you will get it correct. If we assume that the binomial distribution is appropriate, what is the probability that you will get at least 13 of the rst 15 questions correct? (5 marks) .398

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