Solution to STAT 350 Exam 2 Review Questions (Spring 2015 ...

A.Is it reasonable to use the assumption of equal standard deviations when we analyze these data? Give a reason for your answer. Yes, since the standard deviation ratio between max and min is 46/28 < 2. B.Give the values of the variances for the three groups. 1369, 784, and 2116 C.Find the pooled variance. N = 27+31+122 = 180, I = 3 ................
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