11.38 Referring to Applied Example 11.7 (p. 642):

a. Express the percentage of Americans who

“prefer baked” to “other” by region as a 2 4 contingency table.

b. Explain why the following question could be tested using the chi-square statistic: “Is the preference for baked the same in all four regions of the United States?”

c. Explain why this is a test of homogeneity.