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April 26, 2015

Homework Help: statistics

Posted by stan on Wednesday, December 12, 2012 at 3:25am.

5. A professor teaching introductory psychology gave the grades that follow. According to the normal curve, she should have given about 4% As, 14% Bs, 64% Cs, 14% Ds, and 4% Fs. Do a Chi-Square to determine if the actual grade assignment significantly departed from the normal distribution. α=.05

As Bs Cs Ds Fs
25 35 60 30 20

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