Five hundred randomly selected automobile owners were questioned on the main reason they had purchased their current automobile. The results are given below. 
a.State the null and alternative hypotheses for a contingency table test.
b.State the decision rule, using a .10 level of significance.
c.Calculate the chi-square test statistic.
d.Give your conclusion for this test.
Definitions:
Variable Factory Overhead
Variable factory overhead consists of production costs that vary with the level of output, such as utilities and indirect materials.
Fixed Costs
Costs that tend to remain the same in amount, regardless of variations in the level of activity.
Differential Revenue
The additional revenue generated from choosing one alternative over another in decision-making processes.
Domestic Unit Sales
The quantity of product units sold within a company's home country.
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