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22. The following sample data were obtained from three populations where the variances were not equal, and you wish to compare the populations.
Sample 1 Sample 2 Sample 3
21 15 38
29 17 40
35 22 44
45 27 51
56 31 53
71

a. State the null hypothesis.
b. Using the .01 level of risk, state the decision rule.
c. Compute the value of the test statistic.
d. What is your decision on the null hypothesis?

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