Ptobability

Question

70% of incoming college freshmen attend public schools, the rest attend private schools. a) For a random sample of 10 college students, find he probability that exactly 7 go to a public school.

Answer 1

This presumably is a binomial probability with p=.7.

The required probability then is 10C3 * .7⁷ * .3³ = .725314 where 10C3 is the binomial coefficient of  10 things taken 7 at a time.