The management of a grocery store chain knows that the
The management of a grocery store chain knows that the appearance of its stores is very important to customers. Regular surveys of customers are conducted so that appearance can be rated. The results of two surveys done in a particular store are shown below in Exhibit 10.19. Is there evidence, at a 5% level of significance, of a change in the store's ratings? A rating of 5 is the best, and 1 is the worst.
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