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.
a.Compute the overall sample mean.
b.At 0.05, test to see if there is any significant difference in the average scores of the students from the three universities. Set up the complete ANOVA table (Note that the sample sizes are not equal.)
Correct Answer:
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a.82
b. 
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Correct Answer:
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b.
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