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Law enforcement wants to know typical driver speeds in front of a school when children are present. They also want to know if the average speed is exceeding the posted speed limit over the long term. The posted speed limit at this time is 35 mph. They use a radar gun that is accurate to within 1 mph (bias) and a standard deviation of 1 mph. The daily average speeds for a week are 37, 34, 38, 35, and 34 mph. With 95% confidence, is the speed limit exceeded (long term) on average based upon the data?

Law enforcement wants to know typical driver speeds in front of a school when children are present. They also want to know if the average speed is exceeding the posted speed limit over the long term. The posted speed limit at this time is 35 mph. They use a radar gun that is accurate to within 1 mph (bias) and a standard deviation of 1 mph. The daily average speeds for a week are 37, 34, 38, 35, and 34 mph. With 95% confidence, is the speed limit exceeded (long term) on average based upon the data?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Law enforcement wants to know typical driver speeds in front of a school when children are present. They also want to know if the average speed is exceeding the posted speed limit over the long term. The posted speed limit at this time is 35 mph. They use a radar gun that is accurate to within 1 mph (bias) and a standard deviation of 1 mph. The daily average speeds for a week are 37, 34, 38, 35, and 34 mph. With 95% confidence, is the speed limit exceeded (long term) on average based upon the data?

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