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

 

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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 (S thousands) last month for each client sampled. Sales (S thousands), Number of Sales Number of Contacts, ($ thousands), Contacts, Y. 14 12 24 23 30 14 48 90 20 28 50 85 16 30 55 120 46 80 50 110 Click here for the Excel Data File (a) Determine the regression equation. (Negative amounts should be indicated by a minus sign.Do not round intermediate calculations. Round final answers to 4 decimal places.) Y-7 (Y-F (x-Y Xy -7) Y X-X 14 24 -19.4 -37.1 376.36 1376.41 719.74 12 14 -21.4 -47.1 457.96 2218.41 1007.94 20 28 -13.4 -33.1 179.56 1095.61 443.54 16 30 -17.4 -31.1 302.76 967.21 541.14 46 80 12.6 18.9 158.76 357.21 238.14 23 30 -10.4 -31.1 108.16 967.21 323.44 48 90 14.6 28.9 213.16 835.21 421.94 50 85 16.6 23.9 275.56 571.21 396.74 55 120 21.6 58.9 466.56 3469.21 1,272.24 50 110.0 16.6 48.9 275.56 2391.21 811.74 334 611 33.4 Y = 61.1 Sx = %3D !! b = a = Y'= IN 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 (S thousands) last month for each client sampled. Sales (S thousands), Number of Sales Number of Contacts, ($ thousands), Contacts, Y. 14 12 24 23 30 14 48 90 20 28 50 85 16 30 55 120 46 80 50 110 Click here for the Excel Data File (a) Determine the regression equation. (Negative amounts should be indicated by a minus sign.Do not round intermediate calculations. Round final answers to 4 decimal places.) Y-7 (Y-F (x-Y Xy -7) Y X-X 14 24 -19.4 -37.1 376.36 1376.41 719.74 12 14 -21.4 -47.1 457.96 2218.41 1007.94 20 28 -13.4 -33.1 179.56 1095.61 443.54 16 30 -17.4 -31.1 302.76 967.21 541.14 46 80 12.6 18.9 158.76 357.21 238.14 23 30 -10.4 -31.1 108.16 967.21 323.44 48 90 14.6 28.9 213.16 835.21 421.94 50 85 16.6 23.9 275.56 571.21 396.74 55 120 21.6 58.9 466.56 3469.21 1,272.24 50 110.0 16.6 48.9 275.56 2391.21 811.74 334 611 33.4 Y = 61.1 Sx = %3D !! b = a = Y'= IN

Answer rating: 100% (QA)

SOLUTION X Y 14 24 1940 3710 37636 137641 71974 12 14 2140 4710 45796 221841 100794 20 28 1... View the full answer