SOLUTION: Assuming that, of all persons 17 years and over, half the males and a third of the females are classified as presently smoking cigarettes, find the probability that in a randomly s

Question 457872: Assuming that, of all persons 17 years and over, half the males and a third of the females are classified as presently smoking cigarettes, find the probability that in a randomly selected group of 10 males and 15 females.
a. exactly 10 smoke (4 males, 6 females)

Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
s=smoker, n=nonsmoker
men: 210*s^4n^6 Where s=.5 and n=.5
=.2051
.
women: 5005*s^6*n^9 Where s=1/3 and n=2/3
=.1786
.
.2051*.1786=.0366 that 4 males and 6 females smoke.
.
Ed
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