SOLUTION: a multiple choice test has 25 questions with four responses each. in order to pass you must get at least 15 right. what is the probability of passing if you guess on all 25?

Question 626954: a multiple choice test has 25 questions with four responses each. in order to pass you must get at least 15 right. what is the probability of passing if you guess on all 25?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a multiple choice test has 25 questions with four responses each. in order to pass you must get at least 15 right. what is the probability of passing if you guess on all 25?
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binomial problem with n = 25 and p(correct) = 1/4
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P(x>=15) = 1 - binomcdf(25,1/4,14) = 0.0002145
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cheers,
Stan H.
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