college school system finds that the 440-yard-dash times of its male students are normally distributed, with an average time of 70s and
college school system finds that the 440-yard-dash times of its male students are normally distributed, with an average time of 70s and
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 14PPS
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Question
"A college school system finds that the 440-yard-dash times of its male students are normally distributed , with an average time of 70s and a standard deviation of 5.3s". If there were 40 runners, how many of them obtained a time of more than 67s?
A. 27 runners
B. 28 runners
C. 29 runners
D. 30 runners
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