Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 80 drivers, 20 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 95% confidence interval for p

c. Give a practical interpretation of the interval, part b.

a. A point estimate for p is 0.25

Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 80 drivers, 20 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. Computea 95% confidence interval for p. c. Give a practical interpretation of the interval part b. CD a. A paint estimate for pis 0.25 b. The 95% confidence interval for p in (0) (Round to two decimal places as needed)