Question 411785: A quiz cosists of 10 multiple-choice questions, each with 5 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 50 %.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A quiz cosists of 10 multiple-choice questions, each with 5 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 50 %.
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Binomial Problem with n = 10 and p = 1/5
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P(5<= x <=10) = 1-binomcdf(10,1/5,4) = 0.0328
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Cheers,
Stan H.
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