A large used- book store randomly selected 1,000 of its customers and asked them to complete a survey about their satisfaction with the the merchandise in the store. The following data are from the 224 customers who returned the survey. Although the survey requested a considerable amount of information, the store was most interested in the frequency of purchases (number of books purchased in past 3 months) and the customer€™s rating of the adequacy of book selection in the store. The data from the 224 surveys are given in the following table.

a. Is there evidence of a significant relationship between frequency of purchases and adequacy of selection? Use a = .05.
b. Describe the relationship between frequency of purchases and adequacy of selection (if any).

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Adequacy of Selectiorn Frequency of Purchases Por Avrage Good Excellent 37 30 16 28 19 4 or more 12