Question

A woman is expecting triplets. What is the probability that there are 2 girls and 1 boy? What is the probability that all 3 babies are girls?

Answer 1

25% because there are 4 possibilities

Answer 2

@abracadabra would you mind doing it out?

Answer 3

3g0b 2g1b 1g2b 0g3b
those are all the possibilities, so one of those is 25%

Answer 4

g=girl
b=boy
get it?

Answer 5

yes, we are supposed to be doing this with the binomial probability P(r) = nCr p^r q^n-r

Answer 6

sorry, i have no idea how to do it that way...

Answer 7

its okay haha thanks for helping anyway!

Answer 8

your welcome :)