Each year a market research company surveys new car owners 90 days after they purchase their cars. This data is used to

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Each Year A Market Research Company Surveys New Car Owners 90 Days After They Purchase Their Cars This Data Is Used To 1 (38.77 KiB) Viewed 18 times

Each year a market research company surveys new car owners 90 days after they purchase their cars. This data is used to rate auto brands (such as Toyota and Ford) on quality and customer satisfaction. Suppose the following were the quality rating and satisfaction scores for 30 brands sold in the United States. Quality Rating Brand Acura Audi BMW Buick Cadillac Chevrolet Chrysler Dodge Fiat Ford GMC Honda Hyundai Infiniti Jeep Kia LandRover Lexus Lincoln Mazda Mercedes-Benz 64 80 76 74 58 64 58 58 38 66 60 71 70 63 43 72 55 76 65 74 67 Satisfaction Rating 814 858 849 792 826 791 783 790 763 789 791 783 804 831 762 791 853 844 835 790 842

y 900 850 800 Mazda 750 Mercedes-Benz MINI Mitsubishi Nissan Porsche Scion Subaru Toyota Volkswagen Volvo USE SALT 40 50 74 60 67 68 51 63 76 65 78 72 67 69 70 790 80 842 (a) Construct a scatterplot of y = satisfaction rating versus x = quality rating. 795 748 786 882 779 766 783 796 812 O y 900 850 800 750 40 50 60 70 80 AO y 900 850 800 750 40 50 60 70 80 X 900 850 800 750 40 50 60 70 80 X

How would you describe the relationship between x and y? There may be a weak positive linear relationship between quality rating and satisfaction rating. O There is a strong positive linear relationship between quality rating and satisfaction rating. O There is a curved relationship between quality rating and satisfaction rating. O There is a moderate negative linear relationship between quality rating and satisfaction rating. O There is a strong negative linear relationship between quality rating and satisfaction rating. (b) Calculate the value of the correlation coefficient. (Round your answer to four decimal places.) 0.4475 X Interpret this value. O There is a weak negative linear relationship between quality rating and satisfaction rating. O There is a strong negative linear relationship between quality rating and satisfaction rating. O There is a strong positive linear relationship between quality rating and satisfaction rating. O There is no correlation between quality rating and satisfaction rating. There is a weak positive linear relationship between quality rating and satisfaction rating.