In: Statistics and Probability
(4) The sample space that describes all three-child families
according to the genders of the children with respect to birth
order is In the experiment of selecting a three-child family at
random, compute each of the following probabilities, assuming all
outcomes are equally likely.
S = {bbb, bbg, bgb, bgg, gbb, gbg, ggb, ggg}
a. The probability that the family has at least two boys.
b. The probability that the family has at least two boys, given
that not all of the children are girls.
c. The probability that at least one child is a boy.
d. The probability that at least one child is a boy, given that the
first born is a girl.