Question 519258: in a survey on choice of bachelors program, it is found that the probability that a student registers for Actuarial Science is 0.25. Find the probability that in a random sample of nine students
i. Exactly three registers for Actuarial Science Programme
ii.More than two registers for Actuarial Science Programme
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! in a survey on choice of bachelors program, it is found that the probability that a student registers for Actuarial Science is 0.25. Find the probability that in a random sample of nine students
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Binomial Problem with n = 9 and p(act sci) = 0.25
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i. Exactly three registers for Actuarial Science Programme
P(x = 3) = 9C3*0.25^3*0.75^6 = 0.2336
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ii.More than two registers for Actuarial Science Programme
P(3<= x <=9) = 1 - P(0<= x <=2) = 1-binomcdf(9,0.25,2) = 0.3993
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Cheers,
Stan H.
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