According to study conducted in Turkey in 2018, data collected by observers at randomly selected intersections across the country revealed that in a sample of 500 drivers, 450 were using their cell phone. a. Give a point estimate of p, the true driver cell phone use rate (that is, the true proportion of drivers who are using their cell phone while driving). b. Compute a 90% confidence interval for p. c. Give a practical interpretation of the interval, part b. a. A point estimate for p is b. The 90% confidence interval for pis (10) (Round to two decimal places as needed.) c. Interpret this interval. O A. We are confident that 90% of the population do not use a cell phone while driving O B. We are confident that 90% of the population use a cell phone while driving OC. There is a 90% percent chance that the true proportion of drivers who use cell phones is outside this interval. O D. We are 90% confident that the true proportion of drivers using cell phones is inside this interval