Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores, 26% juniors, and 15% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 90 Sophomores 60 Juniors 90 Seniors 60 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. The hypothesis is to be tested at the 2.5% level of significance. The critical
Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores, 26% juniors, and 15% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 90 Sophomores 60 Juniors 90 Seniors 60 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. The hypothesis is to be tested at the 2.5% level of significance. The critical
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.5: Interpreting Data
Problem 1C
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7)
Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores, 26% juniors, and 15% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.
| Freshmen |
90 |
| Sophomores |
60 |
| Juniors |
90 |
| Seniors |
60 |
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.
The hypothesis is to be tested at the 2.5% level of significance. The critical value from the table equals
| a. |
1.96
|
|
| b. |
11.345
|
|
| c. |
7.815
|
|
| d. |
9.348
|
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