Question 257816: A multiple choice exam has 100 questions, each with five possible answers. If a student is just guessing at all the answers, the probablity that he or she gets more than 30 correct is
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A multiple choice exam has 100 questions, each with five possible answers. If a student is just guessing at all the answers, the probablity that he or she gets more than 30 correct is
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P(x>= 30) = 1 - binomcdf(100,1/5,29) = 0.01125...
Cheers,
Stan H.
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