Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 100 drivers, 76 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). A point estimate for p is b. Compute a 90% confidence interval for p. The 90% confidence interval for p is (Round to two decimal places as needed.)

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