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Random samples of five were selected from each of three populations

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Random samples of five were selected from each of three populations. The sum of squares total was 100. The sum of squares due to the treatment was 40.
a. What is the null hypothesis and the alternate hypothesis?
b. What is the decision rule? (Use the 0.05 level of significance)
c. Complete the ANOVA table.
d. What is your decision regarding the null hypothesis?