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 190 were manufactured by Damlier-Chrysler, 240 by Ford, 325 by GM, and 45 by all others.

Test the hypothesis at the 0.05 level that there has been no change in the sales pattern.