Question: an insurance company collects data on seatbelt use among drivers...
An insurance company collects data on seat-belt use among drivers in a country. Of
said that they buckle up, whereas
years old said that they did. Find a
confidence interval for the difference between the proportions of seat-belt users for drivers in the age groups
confidence interval for
p 1 minus p 2p1−p2
(Round to three decimal places as needed.)