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You may use the excel spreadsheet to find the following for the ANOVA test.
Professor Brainfail has 3 classes and took sample of test scores from each class and found the following results. He wanted to know if there are any differences between the three at the .01 level.
Class 1 Class 2 Class 3
80 80 78
76 90 82
83 93 85
87 72 87
90 82 82
a. State the null and alternate hypothesis.
b. Find the SSTOT, SSBET, SSW
c. Find d.f. BET and d.f. W
d. Find MSBET, and MSW
e. Find the F ratio
f. Find the critical value at the .01 level
g. Decide if the null hypothesis is to be rejected or not
h. Make a summary table for your ANOVA test.
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