A national survey of U.S. consumers conducted bythe Wall Street Journalasked the question: "In general, how would you rate the service that Americanbusinessesprovide?"The distributionof responsesto this questionwas as follows:

• Excellent8%
• Pretty good47%
• Only fair34%
• Poor11%

Suppose a store manager wants to find out whether the resultsof this consumer survey apply to customers of supermarkets in his city. To do so, he interviews 207 randomly selected customers as they leave the supermarkets in various parts of the city as to their ratingof service. Following is the number of responses and distribution of this survey:

• Excellent21
• Pretty good109
• Only fair62
• Poor15

Please answer the following:

1. Determine whether the observed frequencies of responses from this survey are the same as the frequencies that would be expected on the basis of the national survey. Hint: Think Chi-square goodness-of-fit, and see Ppts and Selected Example Solutions, and of course, the internet.
2. Can you describe a chi-squared application, either goodness-of-fit or test-for-independence, in your profession?