Probability/Statistics Question?

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If both genders are equally likely at birth, what is the probability that exactly 4 of the 6 children will be girls?

2007-10-31 11:04:20 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

(6 choose 4) * (0.5)^4 * (0.5)^2 = 15/64

2007-10-31 11:51:19 · answer #1 · answered by Ron W 7 · 0⤊ 0⤋

This is a binomial problem with n = 6 and p = 0.50
P(x = 4) = 4!/(4!(6-4)!) 0.50^4(0.50)^2 = 0.2344

2007-10-31 11:54:27 · answer #2 · answered by cvandy2 6 · 0⤊ 0⤋