Use the following information to answer question. A national survey was conducted to study the increase in the cost of personal health insurance. Forty people from 3 regions were asked about the increase in the table year. The results are compiled in the following table; the data do not follow a normal distribution.

Do a test at the 5 percent level of significance to determine whether the average increases in the 3 regions are the same.

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Northeast $320 279 283 West Coast $232 257 264 Southeast $254 231 242