Exercise 2 (20 points) We are surveying families in a community. Among those families : o 20% families are single-parent and 80% are two-parent. 0 Among the single-parent families , 75%. have one child and 20% have two children and 5% have three children. 0 Among the two-parent families, 30% have one child and 50% have two children and 20% have three children. 1. If we choose a parent at random, what is the probability they are in a couple? 2. If we choose a children at random, what are the probabilities that they have no siblings? one sibling? two siblings