# Statistics

Suppose that
30%

of all college students smoke cigarettes. A sample of
18
is selected randomly. What is the probability that exactly
10

1. http://onlinestatbook.com/2/probability/binomial.html
C(18,10) = 18!/[10!(18-10)]
P(18) = C(18,10) * .3^10 * .7*8

posted by Damon
2. http://www.statisticshowto.com/binomial-distribution-formula/

posted by Damon

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