Drs. Trythall and Kerns are studying the mobility of executives in selected industries. Their research measures mobility using a score based on the number of times an executive has moved, changed companies, or changed jobs within a company over the last 10 years. The highest number of points is awarded for moving and changing companies; the fewest, for changing jobs within a company and not moving. They randomly sampled five executives in the chemical industry, six in the retail industry, five in the Internet industry, and five in the aerospace industry. The distribution of scores does not follow the normal probability distribution. Develop an appropriate test to determine if there is a difference in the mobility scores in the four industries. Use the .05 significancelevel.

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Chemical Retail 12 40 17 31 19 Internet 62 40 81 96 76 Aerospace 30 38 46 40 21 17 20 16