Question

A random sample of nine pairs of measurements is shown in the following table (saved in the LM14_40 file).
a. Use the Wilcoxon signed rank test to determine wheth er the data provide sufficient evidence to indicate that the probability distribution for population 1 is shifted to the right of the probability distribution for population 2.
Test, using a = .05.
b. Use the Wilcoxon signed rank test to determine wheth er the data provide sufficient evidence to indicate that the probability distribution for population 1 is shifted either to the right or to the left of the probability distri bution for population 2. Test, using a = .05.

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