(a) Approximately what percentage of these vehicle speeds were between 28 and 60 mph? approximately % (b) Approximately what percentage of these vehicle speeds exceeded 60 mph? (Round your answer to the nearest whole number.) approximately
(a) Approximately what percentage of these vehicle speeds were between 28 and 60 mph? approximately % (b) Approximately what percentage of these vehicle speeds exceeded 60 mph? (Round your answer to the nearest whole number.) approximately
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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In a study investigating the effect of car speed on accident severity, 5,000 reports of fatal automobile accidents were examined, and the vehicle speed at impact was recorded for each one. For these 5,000 accidents, the average speed was 44 mph and the standard deviation was 16 mph. A histogram revealed that the vehicle speed at impact distribution was approximately normal. (Use the Empirical Rule .)
(a)
Approximately what percentage of these vehicle speeds were between 28 and 60 mph?
approximately %
(b)
Approximately what percentage of these vehicle speeds exceeded 60 mph? (Round your answer to the nearest whole number.)
approximately %
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