11. The shares of the U.S. automobile market held in 1990 by General Motors, Japanese manufacturers, Ford, Chrysler, and other manufacturers were, respectively, 34%, 27%, 19%, 11%, and 9%. Suppose that a new survey of 1,000 new-car buyers shows the following purchase frequencies: GM Japanese Ford Chrysler Other 398 217 282 46 57 (a) Show that it is appropriate to carry out a chi-square test using these data and calculate the value of the test statistic. Each expected value is 2 x2 (b) Test to determine whether the current market shares differ from those of 1990. Use a = .05. (Round your answer to 3 decimal places.) (Click to select) |Ho . Conclude current market shares (Click to select) | from those of 1990. References eBook & Resources