Posted by Maria on Wednesday, February 10, 2010 at 11:40am.
Suppose a family has 5 children. Suppose the probability of having a girl is 1/2. find the probability that the family has exactly 3 girls and 2 boys?

Finite Math  Reiny, Wednesday, February 10, 2010 at 12:23pm
that would be
C(5,3)(1/2)^3(1/2)^2
= 10/32 = 5/16

Finite Math  ihj, Wednesday, May 11, 2016 at 11:40pm
C(5,3)(1/2)^3(1/2)^2
= 10/32 = 5/16
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