Refer to the Whitner Autoplex file online, which reports information on car sales.
a. Develop a contingency table that shows the code and selling price. Is there an association between the variables code and selling price? Use under $25000, $25000 to under $35000, and over $35000 as the selling price categories. Use the 0.05 significance level.
b. Develop a contingency table that shows the age of the buyer and the selling price. Is there an association between the age of the buyer and the selling price? Use under $25000, $25000 to under $35000, and over $35000 as the selling price categories. Use the 0.05 significance level.