Question 732237: Teacher gave his class a multiple choice quiz containing five questions. A student must answer at least 4 questions correctly to pass. Student decided to guess on every question. If each of the four possible answers to each question is equally likely to be chosen, what is the probability that student passed the quiz
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Teacher gave his class a multiple choice quiz containing five questions. A student must answer at least 4 questions correctly to pass. Student decided to guess on every question. If each of the four possible answers to each question is equally likely to be chosen, what is the probability that student passed the quiz?
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Binomial Problem with n = 5 ; P(correct) = 1/4
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P(4<= x <=5) = 1 - binomcdf(5,1/4,3) = 0.0156
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Cheers,
Stan H.
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