In a survey of 1100 drivers, 90% admitted to careless or aggressive driving during the previous six months (“Nine out of Ten Drivers Admit in Survey to Having Done Something Dangerous,” Knight Ridder Newspapers, Jul. 8, 2005). Assuming these 1100 drivers may be treated as a random sample of all drivers in the USA, construct and interpret a 95% CI for the true proportion of drivers who have engaged in “dangerous” driving in the past six months.