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Suppose data collected by observers at randomly selected intersections across the 250 drivers, 50 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 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 0.2 b. The 90% confidence interval for p is (). (Round to two decimal places as needed.) c. Interpret this interval. ant 90% of the population use a cell phone while driving.

Suppose data collected by observers at randomly selected intersections across the 250 drivers, 50 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 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 0.2 b. The 90% confidence interval for p is (). (Round to two decimal places as needed.) c. Interpret this interval. ant 90% of the population use a cell phone while driving.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 250 drivers, 50 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 0.2 b. The 90% confidence interval for p is (). (Round to two decimal places as needed.) c. Interpret this interval. OA. We are confident that 90% of the population use a cell phone while driving. OB. We are 90% confident that the true proportion of drivers using cell phones is inside this interval. OC. We are confident that 90% of the population do not use a cell phone while driving. OD. There is a 90% percent chance that the true proportion of drivers who use cell phones is outside this interval.
Transcribed Image Text:Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 250 drivers, 50 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 0.2 b. The 90% confidence interval for p is (). (Round to two decimal places as needed.) c. Interpret this interval. OA. We are confident that 90% of the population use a cell phone while driving. OB. We are 90% confident that the true proportion of drivers using cell phones is inside this interval. OC. We are confident that 90% of the population do not use a cell phone while driving. OD. There is a 90% percent chance that the true proportion of drivers who use cell phones is outside this interval.
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