Problem 4: A survey reported in Time magazine included the question "Do you favor a federal law requiring a 15-day waiting period to purchase a gun?" Results from a random sample of US citizens showed that 318 of the 520 men who were surveyed supported this proposed law while 379 of the 460 women sampled said "yes". a. Use this information to find a 95% confidence interval for the difference in the two proportions, Pm - Pw , where pm is the proportion of men who support the proposed law and p, is the proportion of women who support the proposed law. Round your answers to three decimal places. (5 points) b. Provide an appropriate interpretation (in the context of this problem) of your 95% confidence interval. (3 points)