Statistics Solutions

[See Solution] In recent years, 42 percent of the American made automobiles sold in the United States were manufactured by General Motors, 33 percent by

Question: In recent years, 42 percent of the American made automobiles sold in the United States were manufactured by General Motors, 33 percent by Ford, 22 percent by Damlier-Chrysler, and 3 percent by all others. A sample of the sales of American-made automobiles conducted last week revealed that 174 were manufactured by Damlier-Chrysler, 275 by Ford, 330 by GM, and 21 by all others. Test the hypothesis at the 0.05 level that there has been no change in the sales pattern.

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