Need help with 34 For a 3child family find the probability o

For a 3-child family, find the probability of exactly 2 girls. given that the first child is a girl. For a 3-child family, find the probability of exactly 1 girl, given that the first child is a boy...

Solution

Here, we are asked

P(more than 2|at least 1) = P(more than 2) / P(at least 1) = [P(3) + P(4) + P(5 or more)] / [1 - P(no children)]

= (0.16+0.08+0.06)/(1-0.20)

= 0.375 [answer]