Question: Consider the following two samples: a. Show that both samples have the same mean and variance. b. Use the Wilcoxon rank-sum test to test the

Consider the following two samples:

X: 0 2 3 4 10 20 40 100 1000 Y: -738

a. Show that both samples have the same mean and variance.

b. Use the Wilcoxon rank-sum test to test the null hypothesis that the population means are equal. What do you conclude?

c. Do the assumptions of the rank-sum test appear to be satisfied? Explain why or why not.

X: 0 2 3 4 10 20 40 100 1000 Y: -738 162 222 242 252 258 259 260 262

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