Since you have been studying probability, you ask your friend the following question: "A family has 4 children, what are the chances that 2 are boys and 2 are girls." Your friend says, "It is 50%, of course!" Draw your friend a tree diagram of all possible outcomes, and use your tree diagram to determine the correct probability of having 2 boys and 2 girls. (Your friend is not as fortunate as you to take MATH 2303, but she is lucky to have you to explain it to her.)