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Null hypothesis, decision rule, test statistic

The following sample data were obtained from three populations that did not follow a normal distribution.

Sample 1 Sample 2 Sample 3

50 48 39
54 49 41
59 49 44
59 52 47
65 56 51
57
a. State the null hypothesis.
b. Using the .05 level of risk, state the decision rule.
c. Compute the value of the test stastic.
d. What is your decision on the null hypothesis?

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