In: Statistics and Probability
In 2015, the student body of Lock Haven 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. The calculated value for the test
statistic equals?