It has been reported that the variance of the speeds of drivers Turnpike near Somerset, PA is 64 for all vehicles. A driver who was pulled over near Somerset on the pike feels that value is incorrect and conducts a survey of speeds. He finds that the standard deviation of 50 vehicles is 10.5 mph. At a = 0.05, is the driver correct?
It has been reported that the variance of the speeds of drivers Turnpike near Somerset, PA is 64 for all vehicles. A driver who was pulled over near Somerset on the pike feels that value is incorrect and conducts a survey of speeds. He finds that the standard deviation of 50 vehicles is 10.5 mph. At a = 0.05, is the driver correct?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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