7.) Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 62 mph and a standard deviation of 5. a.) What percent of cars are traveling faster than 64 mph? b.) What percent of cars are traveling slower than 56 mph? What percent of cars are traveling between 53 mph and 69 mph?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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7.) Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 62
mph and a standard deviation of 5.
a.) What percent of cars are traveling faster than 64 mph?
b.) What percent of cars are traveling slower than 56 mph?
c.) What percent of cars are traveling between 53 mph and 69 mph?
Transcribed Image Text:7.) Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 62 mph and a standard deviation of 5. a.) What percent of cars are traveling faster than 64 mph? b.) What percent of cars are traveling slower than 56 mph? c.) What percent of cars are traveling between 53 mph and 69 mph?
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