Question 16
Miss Mooney has three children. You see her with a little girl, whom she introduces as her middle child. Compute the probability that her other two children are girls, assuming that each child has probability $1/2$ of being a girl.
Practice probability model: the sexes of the three children are independent, each equally likely to be girl or boy; identifying the middle child introduces no further selection bias.
Practice probability model: the sexes of the three children are independent, each equally likely to be girl or boy; identifying the middle child introduces no further selection bias.