In 2015, the student body of a Lock Haven University consisted of 30% freshmen, 24% sophomores,...

In 2015, the student body of a 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. At 95% confidence, the null hypothesis

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orchestra answered 1 year ago

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