The shares of the U.S. automobile market held in 1990 by General Motors, Japanese manufacturers, Ford, Chrysler, and other manufacturers were, respectively, 36%, 26%, 21%, 9%. and 8%. Suppose that a new survey of 1,000 newcar buyers shows the following purchase frequencies: GM Japanese For'd Chrysler Other 391 282 275 53 3'9 Bpicture Click here for the Excel Data File (a) Show that it is appropriate to carry out a chisquare test using these data. Each expected value is e I I {b} Determine whether the current market shares differ from those of1990. Use a = .05. (Round your answer to 3 decimal places.) x\"2 :l H0. Conclude current market shares I I from those of 1990. A B C Auto Maker market share purchase frequency 2 GM 36% 391 3 Japanese 26% 202 4 Ford 21% 275 5 Chrysler 9% 53 6 Other 8% 79