The shares of the U5. automobile market held in 1990 by General Motors, Japanese manufacturers, Ford, Chrysler, and other manufacturers were, respectively, 38%, 22%, 23%, 10%, and 7%. Suppose that a new survey of 1,000 new-car buyers shows the following purchase frequencies: GM Japanese Ford Chrysler Other 384 243 258 64 51 QW (a) Show that it is appropriate to carry out a chisquare test using these data. Each expected value is 2 _ (b) Determine whether the current market shares differ from those of 1990. Use a = .05. (Round your answer to 3 decimal places.) I I H0. Conclude current market shares