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The shares of the U.S. automobile market held in 1990 by General Motors, Japanese manufacturers, Ford, Chrysler, and other manufacturers were, respectively, 33%, 28%, 24%, 9%, and 6%. Suppose that a new survey of 1,000 new-car buyers shows the following purchase frequencies:   GM Japanese Ford Chrysler Other 361 228 272 89 50      Click here for the Excel Data File   (a) Show that it is appropriate to carry out a chi-square test using these data.           (b) Determine whether the current market shares differ from those of 1990. Use α = .05. (Round your answer to 3 decimal places.)

The shares of the U.S. automobile market held in 1990 by General Motors, Japanese manufacturers, Ford, Chrysler, and other manufacturers were, respectively, 33%, 28%, 24%, 9%, and 6%. Suppose that a new survey of 1,000 new-car buyers shows the following purchase frequencies:   GM Japanese Ford Chrysler Other 361 228 272 89 50      Click here for the Excel Data File   (a) Show that it is appropriate to carry out a chi-square test using these data.           (b) Determine whether the current market shares differ from those of 1990. Use α = .05. (Round your answer to 3 decimal places.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 23PPS
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The shares of the U.S. automobile market held in 1990 by General Motors, Japanese manufacturers, Ford, Chrysler, and other manufacturers were, respectively, 33%, 28%, 24%, 9%, and 6%. Suppose that a new survey of 1,000 new-car buyers shows the following purchase frequencies:

 

GM Japanese Ford Chrysler Other
361 228 272 89 50
 

 

 Click here for the Excel Data File

 

(a) Show that it is appropriate to carry out a chi-square test using these data.

 

 

 

 

 

(b) Determine whether the current market shares differ from those of 1990. Use α = .05. (Round your answer to 3 decimal places.)

 

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