The following table shows the U. S. market share for automotive manufacturers in 2013 according to Auto
Question:
The following table shows the U. S. market share for automotive manufacturers in 2013 according to Auto data. Also shown is the frequency of car purchases by manufacturer from a random sample of 220 customers during 2014.
a. Using α = 0.10, perform a chisquare test to determine if the U. S. market share in the automotive industry has changed between 2013 and 2014.
b. Determine the pvalue for the chisquare test statistic using Excel and interpret its meaning.
Transcribed Image Text:
Market Share Frequency Manufacturer General Motors Ford Motor Toyota Chrysler Honda Other Total 2013 (%) 18.5 16.5 13.7 12.2 10.2 28.9 2014 35 37 24 20 17 87 220
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a H 0 US market share for cars did not change between 2013 and 2014 H 1 ...View the full answer
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