Required information Problem 6-42 Continuation of Preceding Problem; Computing Least-Squares Regression Estimates; Comparing Multiple Methods (Appendix) (LO 6-1, 6-2, 6-5, 6-6, 6-9) [The following information applies to the questions displayed below.) Martha's Vineyard Marine Supply is a wholesaler for a large variety of boating and fishing equipment. The company's controller, Mathew Knight, has recently completed a cost study of the firm's material handling department in which he used work measurement to quantify the departments activity. The control factor unit used in the work-measurement study was hundreds of pounds of equipment unloaded or loaded at the company's loading dock Knight compiled the following data. Month January February March April Hay June July August September October November units of Activity (hundreds of pounds of equipment loaded or unloaded) 2,200 2.000 1,700 1,600 2,600 2.0D 2.400 2,200 3.000 1.500 1.600 Material Handling Department costs $12,100 11,700 11.450 10,600 11,500 13,150 12,400 11,800 12.000 11.250 11,750 March April May June July August September October November December 1,700 1,400 2.600 2.800 2. 2,200 3,000 1,500 1.600 1,800 11,450 10,600 11,500 13,150 12,400 11,800 12,600 11,250 11,750 11,750 Problem 6-42 Part 2 2. Complete the least squares regression equation for the department's costs. (Do not round intermediate calculations. Round variable cost per unit to 2 decimal places and other answer to the nearest whole dollar amount.) Total monthly cost = per unit of activity NARRARARAR