SOLUTION: students recieve 1 of 4 versons of a math test (a,b,c,d). whats the probability that at least 3 of the 5 students tested will get version A?

Question 559339: students recieve 1 of 4 versons of a math test (a,b,c,d). whats the probability that at least 3 of the 5 students tested will get version A?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
students receive 1 of 4 versons of a math test (a,b,c,d). whats the probability that at least 3 of the 5 students tested will get version A?
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Binomial Problem with n = 5 and p(version a) = 1/4
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P(x = 3) = 5C3*(1/4)^3*(3/4)^2 = binompdf(5,1/4,3) = 0.0879
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Cheers,
Stan H.
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