Exhibit 11-2
Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.
Freshmen | 83 |
Sophomores | 68 |
Juniors | 85 |
Seniors | 64 |
We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.
Refer to Exhibit 11-2. The expected frequency of seniors is
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60
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20%
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68
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64