Question: 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’ Sales-‘Y’ ($ Thousands) Number of Contacts- ‘X’ Sales ($ Thousands)- ‘Y’

a.) Determine the regression equation.

b.) Determine the estimated sales if 40 contacts are made.