Problem # 2 (40 pts). (Show your work) Data for a sample of 8 pharmacies are used to examine the relation between prescription sales volume and the percent of prescription ingredients purchased directly from the supplier. The sample data are shown here: % of 10 20 25 41 50 63 42 33 ingredients (x) Sales (in 32 55 50 75 110 134 92 61 $1000) (y) Find the correlation coefficient r. Find the regression equation ) = bo + bj x Construct the scatter plot Graph the regression equation through the scatter plot