C. After determining that there is a correlation you decide to create a formula for the relationship so that you can estimate a target for orders fulfilled per hour based on the average number of line items per order. That way, you can provide customers with a more accurate estimate of time to ship. Using linear regression as a prediction tool, determine a formula for this relationship. lis the mean line items per order over the last week. (/ points) Obs. (X-AT (X-67 (Y-67 1 -3.8 2 14.44 -7.6 2 4.2 -1 17.64 -4.2 3 A 5 Total D. Using your above formula, estimate how many orders per hour you should schedule to fulfill in a day if there are an average of 16 line items per order. (2 points) E. What other variables could you consider as part of a multiple regression analysis to improve this estimate? (2 points)