Math 540
posted by Cassie .
The Department of Management Science at Tech has sampled 250 of its majors and compiled the following frequency distribution of grade point averages (on a 4.0 scale) for the previous semester.
GPA Frequency
00.5 1
0.51.0 4
1.01.5 20
1.52.0 35
2.02.5 67
2.53.0 58
3.03.5 47
3.54.0 18
250
The sample mean  for this distribution is 2.5 and the sample standard deviation (s) is
X
0.72. Determine if the student GPAs are normally distributed using a .05 level of significance (i.e. a = .05).
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