An umbrella maker is deciding whether to concentrate on eastern or western Canada. To help decide, she randomly selects cities from both parts of the country, and obtains the corresponding annual precipitation data (in millimeters). At the 0.01 significance level, test the claim that, in general, eastern and western cities have the same amount of annual precipitation. Based on your result, can we conclude that one side of Canada would be a better market for umbrellas than the other?

Use the Wilcoxon rank-sum test.

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Eastern Cities Western Cities 1169 1282 1174 712 1444 909 879 1109 769 946 1097 1514 908 398 467 526 1113 647 454 2523 402 628 467 266 424 384 762 1491