Thread: Probability Question

Twenty-eight percent of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that the number of college students who say they use credit cards because of the rewards program is

a) exactly three
b) more than three
c) between three and five inclusive.

Originally Posted by corbe108

Twenty-eight percent of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that the number of college students who say they use credit cards because of the rewards program is

a) exactly three
b) more than three
c) between three and five inclusive.

This is a binomial distribution question. n = 10, p = 0.28. Where do you get stuck? If you search the forums you will find many examples.