The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed the diversion highway found that their speeds were normally distributed, with a mean of 61 mph and a standard deviation of 7 mph. a. How many of the vehicles had a speed of more than 68 mph? b. How many of the vehicles had a speed of less than 40 mph?
The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed the diversion highway found that their speeds were normally distributed, with a mean of 61 mph and a standard deviation of 7 mph. a. How many of the vehicles had a speed of more than 68 mph? b. How many of the vehicles had a speed of less than 40 mph?
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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The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed the diversion highway found that their speeds were normally distributed, with a mean of 61 mph and a standard deviation of 7 mph.
a. How many of the vehicles had a speed of more than 68 mph?
b. How many of the vehicles had a speed of less than 40 mph?
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