SOLUTION: A couple plans to have 5 children. Find the probability they will have more than 3 boys. ( Assume girl and boy babies are equally likely.)

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Question 871129: A couple plans to have 5 children. Find the probability they will have more than 3 boys. ( Assume girl and boy babies are equally likely.)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p(boy) = .5, n = 5
P(x ≥ 3) = 1 - binomcdf(5, .5, 2) = .5
0r
Using P+%28x%29=+highlight_green%28nCx%29%28p%5Ex%29%28q%29%5E%28n-x%29+
P(x ≥ 3) = P(x=3)+P(x=4)+P(x=5) = .3125 + .15625 + .03125