Problem Set 2.6: Determining Probability Criterion: Determine the probability. Instructions: Read and answer the question below. Probability of first marriage among women. A National Center for Health Statistics (NCHS) brief report by the Centers for Disease Control and Prevention (CDC) in 2009 identified that about 6% of women in the United States married for the first time by their 18th birthday, 50% married by their 25th birthday, and 74% married by their 30th birthday Based on these data, what is the probability that in a family with two daughters, the first and second daughter will be married by each of the following ages? 1. 18 years of age: 6/2 = 3% 2. 25 years of age: 50/2 = 25% 3. 30 years of age: 74/2 = 37%