16. FILE Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between...

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16. FILE Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample information. The x column indicates the number of client contacts last month and the y column shows the value of sales ($ thousands) last month for each client sampled. Number of Contacts, X 14 12 20 16 46 Sales ($ thousands), y SERRE 24 14 28 30 80 Number of Contacts, X 23 48 50 50 a. Determine the regression equation. b. Determine the estimated sales if 40 contacts are made. Sales ($ thousands), y 30 90 85 120 110 16. FILE Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample information. The x column indicates the number of client contacts last month and the y column shows the value of sales ($ thousands) last month for each client sampled. Number of Contacts, X 14 12 20 16 46 Sales ($ thousands), y SERRE 24 14 28 30 80 Number of Contacts, X 23 48 50 50 a. Determine the regression equation. b. Determine the estimated sales if 40 contacts are made. Sales ($ thousands), y 30 90 85 120 110

Answer rating: 100% (QA)

X 14 12 20 16 46 23 48 50 55 50 334 y xx yy xx2 yy2 24 1940 3710 37636 13764 1... View the full answer