Problem # 1 (25 pts) A marketing manager conducted a study to determine whether there is a linear relationship between money spent on advertising and company sales. The data are listed in the table below. Advertising Expenses (x) 2.4 1.6 2.0 2.6 1.4 1.6 2.0 2.2 (1000s Of $), Company Sales ( y ) 225 184 220 240 180 184 186 215 (1000s of $) a) Find the correlation coefficient r b) Find the regression equation2 c) Graph the regression equation through the scatter plot (Hint: Construct the scatter plot first, then graph)