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Random samples of populations (in thousands) of U.S. cities in three sections of the country are listed. Is there evidence to conclude a difference in means at the 0.001 level of significance?
Eastern Third
Middle Third
Western Third
187
217
276
146
478
110
362
277
177
186
113
122
174
128
134
248
150
137
335
198
338
255
A) Solve using a one-way ANOVA test
B) Solve using a Kruskal-Wallis test
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