Question: In Example, we found that the probability that a woman with two children either has two girls or two boys is .5002. What is the probability that she has one child of each sex?
Example: Probability of Either Two Boys or Two Girls in Two Births. What is the probability that a woman who has two children has either two girls or two boys? The question asks about two mutually exclusive events because with only two children, she can't have two girls and two boys.