Historically, Across Department As Bs Cs Ds Fs 20% 15% 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 50 130 60 40 20 Historically, Professor X's As Bs Cs Ds Fs 15% 20% 45% 15% 5%

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Do the data for 300 exams suggest a significant deviation from what Professor X’s distribution has been all along?

Historically, Across Department
As
Bs
Cs
Ds
Fs
20%
15%
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
50
130
60
40
20
Historically, Professor X's
As
Bs
Cs
Ds
Fs
15%
20%
45%
15%
5%
Transcribed Image Text:Historically, Across Department As Bs Cs Ds Fs 20% 15% 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 50 130 60 40 20 Historically, Professor X's As Bs Cs Ds Fs 15% 20% 45% 15% 5%
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