SOLUTION: If the probability that the average freshman will complete four years of college is 2/3, what is the probability that a) 4 freshmen will graduate? b) only three will complete? and

Question 985022: If the probability that the average freshman will complete four years of college is 2/3, what is the probability that a) 4 freshmen will graduate? b) only three will complete? and c) at least one will graduate?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If the probability that the average freshman will complete four years of college is 2/3, what is the probability that
a) 4 freshmen will graduate?:: (2/3)^4
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b) only three will complete? 4(2/3)^3(1/3) = binompdf(4,2/3,3) = 0.3951
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c) at least one will graduate?
Ans:: 1-P(none grad) = 1-(1/3)^4 = 0.9877
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Cheers,
Stan H.
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