O 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 Sales Number of Sales Contacts, ($ thousands) , Contacts, ($ thousands) , X Y X 24 $31 38 $54 49 98 21 28 32 33 24 24 44 76 41 68 26 33 49 106 a. Not available in Connect. b. Determine the regression equation. (Do not round intermediate calculations and round the final answers to 4 decimal places. Negative answers should be indicated by a minus sign.) b= 27039 a = -38.9957 Y'= -38.9957 + 27039 X c. Determine the estimated sales if 56 contacts are made. (Round the final answer to 4 decimal places.) -2186 4631