SOLUTION: what is the probability that a student will answer at least nine questions correctly by random guessing on an exam with 10 multiple choice questions each of which has four options?
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Question 619639: what is the probability that a student will answer at least nine questions correctly by random guessing on an exam with 10 multiple choice questions each of which has four options? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! what is the probability that a student will answer at least nine questions correctly by random guessing on an exam with 10 multiple choice questions each of which has four options?
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Binomial Problem with n = 10 and p(correct) = 1/4
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P(9<= x <=10) = 1 - binomcdf(10,1/4,8) = 0.00002956
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Cheers,
Stan H.
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