The National Highway Traffic Safety Administration published the Motor Vehicle Occupant Safety Survey in March 2000. Their survey of seat belt use asked 3,569 male and 3,893 female drivers, "When driving this [vehicle], how often do you wear your seat belt? In response, 74% of the male drivers and 84% of the female drivers answered "All of the time".

a. How many of the male drivers answered "All the time"? How many of the femal drivers?

b. Estimate, with 95% confidence, the difference between the proportion of all male drivers and the proportion of all female drivers who would answer that they wear their seat belt "all of the time".

c. Based on your CI result, how much more likely are women to wear their seat belt than men?