Citizen Re x True Or instructure.com/courses/1399895/quizzes/2018371/take/questi

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Citizen Re x True Or instructure.com/courses/1399895/quizzes/2018371/take/questions/45580787 Small Sample Difference of Means Test. Each year Forbes puts out data on the top college and universities in the U.S. The following is a sample from the top 300 institutions in 2015. The test we will look at is the difference in the average 4-year graduation rates of private and public schools. The data are given below. We can assume equal variances Note: I used the variances for all my calculations. 4-year graduation rates by Public and Private status of Top Universities Private Public 57.294 61.000 49000 32000 STEM Leaf 0.526 69.000 STEM Leaf 278 Max Variance Std Deviation CV 87.000 139.374 11.806 16.739 19 197.346 14.048 24.519 17 511 29 6101 1789 245668 8 024477 Avalu' of 41953. rate of 49% Avalue onl26an nte of 32% The degrees of freedom for this problem, based on the assumption of equal variances, is 35 34

Explanation / Answer

Since we have assumed equal variances for the two populations, degrees of freedom = n1 + n2 - 2 = 19 + 17 - 2 = 34.

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