Last school year, the student body of a local university of 30% freshmen, 24% so

Question

Last school year, the student body of a local university of 30% freshmen, 24% sophomores, 26% juniors, and consisted 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in Points out 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 p-value is Select one: less than .005. between .05 and .1. greater than .1. between .025 and .05.

Explanation / Answer

From following results p-value=0.65>0.10

so part-c is answer

Class Oi pi Ei=300*pi (Oi-Ei)^2/Ei Freshme 83 0.3 90 0.54 Sohpomres 68 0.24 72 0.22 Juniors 85 0.26 78 0.63 Seniors 64 0.2 60 0.27 total 300 1 300 1.66 Chi-square 3 degree of freedom 0.65 p-value

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