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Joseph has taken two tests in his chemistry class. He scored 72 on the first test, for which the mean of all scores was 65 and the standard deviation was 8. He received a 60 on a second test, for which the mean of all scores was 45 and the standard deviation was 12. In comparison to the other students, did Joseph do better on the first test or the second test? By what percent did he do better?

Joseph has taken two tests in his chemistry class. He scored 72 on the first test, for which the mean of all scores was 65 and the standard deviation was 8. He received a 60 on a second test, for which the mean of all scores was 45 and the standard deviation was 12. In comparison to the other students, did Joseph do better on the first test or the second test? By what percent did he do better?

MATLAB: An Introduction with Applications
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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Joseph has taken two tests in his chemistry class. He scored 72 on the first test, for which
the mean of all scores was 65 and the standard deviation was 8. He received a 60 on a second
test, for which the mean of all scores was 45 and the standard deviation was 12. In comparison to
the other students, did Joseph do better on the first test or the second test? By what percent did
he do better? 

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