
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Does the new method appear to lead to a new grade distribution? Test at the 5% significance level. Also, is the new method better? Explain.

Transcribed Image Text:1. Historically, the grade distribution on a final exam for a math
class has been as follows:
Historically, Across Department
As
Bs
Cs
Ds
Fs
15%
20%
40%
15%
10%
After implementing a new teaching method, the final exam grade
distribution (in counts) for 300 students was as follows:
As
Bs
Cs
Ds
Fs
60
50
130
40
20
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