Three Universities Administer the Same Comprehensive Examination to the Recipients $\alpha$

question 108

Essay

Three universities administer the same comprehensive examination to the recipients of MS degrees in psychology.From each institution,a random sample of MS recipients was selected,and these recipients were then given the exam.The following table shows the scores of the students from each university.Note that the sample sizes are not equal.

a.Compute the overall mean.
b.At $\alpha$ = 0.01,test to see if there is any significant difference in the average scores of the students from the three universities.Use both the critical value and p-value approaches.

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