The Hart Corporation manufactures and sells equipment. Each type of equipment requires machining time. The Company has assembled the following data pertaining to machine costs which cannot be easily identified as either fixed or variable. Hours represent the number of hours the machine has been used in production and costs include maintenance and materials required to keep the machine operational. Observation Machine Hours Total Costs 1 1.920 $28,550 2 1.800 $27.000 3 2.100 S33.000 4 1.900 S29.250 5 1,970 $30.900 6 2.350 $35,900 1.400 $23,000 Acc 255 - Management Accounting 1 Fall 2020 Lab Assignment 4 - Total 100 marks Chapter 10 & 11 Due: Wednesday, November 4, 2020 Required 1. Estimate the regression line (linear cost equation) using the least-squares technique. 2. Create a graph using the data provided, ensure to report the trendline, cost equation and format axis. 3. Based on the plotted points from the graph, evaluate the: a. Economic Plausibility b. Goodness of Fit c. Slope of regression line 4. One tractor requires $10,000 in direct materials and $15,000 in direct manufacturing labour. It takes 1,500 hours to machine one tractor, calculate the total variable cost of one tractor