Last school the student body of a local university consisted of 30% freshmen, 24% sophomores, year, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed th 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 hypothesis is to be tested at the 5% level of significance. The critical value from the table equals O a. 7.815 ОБ.1.645 О с. 2.75

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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 hypothesis is to be tested at the 5% level of significance. The critical value
from the table equals
О а.7.815
b. 1.645
с. 2.75
n d.1.96.
Transcribed Image Text: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 hypothesis is to be tested at the 5% level of significance. The critical value from the table equals О а.7.815 b. 1.645 с. 2.75 n d.1.96.
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