SOLUTION: What is the probability that a couple will have at least three sons if they plan to have 4 children and if the probability of having a son equals the probability of having a daught

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Question 867204: What is the probability that a couple will have at least three sons if they plan to have 4 children and if the probability of having a son equals the probability of having a daughter?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p(son) = 1/2 , n =4
P(x ≥ 3) = 1 - binomcdf(4, .5, 2) = .3125