SOLUTION: find the probability of at exactly 2 girls in 10 births. assume that males and females births are equally likely and that the births are independent ecents.

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Question 921192: find the probability of at exactly 2 girls in 10 births. assume that males and females births are equally likely and that the births are independent ecents.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p(girl) = 1/2, p(boy) = 1/2, n = 10
P(x= 2) = 10C2(.5)^2(.5)^8 = binompdf(10, .5, 2)