Question

In a family with 2 children, excluding multiple births, what is the probability of having 2 girls? Assume that a girl is as likely as a boy at each birth. The probability of having 2 girls is (Type a fraction. Simplify your answer.)

Answer 1

B be Let G be giel child 4 be boy child Total number of outcomes sample space is OR s { GG, GB, Bop BB - n13)=4 where Gų : Both childrens are Girls GB Girl t Fiest child is second is Boy. B .. First child is Boy I second is Giel. BB Both childrens are Boys Let E be event of having 2 Girls E { GG n (E) - : P(E) n(e) nis) =o.25 PCE) 1 / 4 The probability of having a giels is s} SO-25