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.


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  • CreatedJuly 28, 2015
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