A sociologist is studying the effect of having children within the first two years of marriage on the divorce rate. Using hospital birth records, she selects a random sample of 200 couples that had a child within the first two years of marriage. Following up on these couples, she finds that 80 couples are divorced within five years. Which of the following is closest to the sample size you would need to estimate p with a margin of error of 0.02 with 90% confidence? a. At the 10% alpha level, we would reject the claim that the divorce rate is 50% for couples who had a child within the first two years of marriage.
b. Based on this interval, we can clearly see that the divorce rate is between 35% and 46%
c. Based on this interval, we can clearly see that the divorce rate is well below the 50% national average for all marriages.
d. All the answers are correct