Exercise 8-36 (Algo) Cost Estimation; High-Low Method; MAPE [LO 8-3] Ethan Manufacturing Incorporated produces floor mats for automobiles. The owner, Joseph Ethan, has asked you to assist in estimating maintenance costs. Together, you and Joseph determine that the single best cost driver for maintenance costs is machine hours. These data are from the previous fiscal year for maintenance costs and machine hours: Month Maintenance Costs $ 2,720 2,880 Machine Hours 123456789 1,810 1,890 3,030 1,970 3,140 1,990 3,220 2,020 3,190 2,000 3,130 1,980 2,970 1,960 2,740 1,820 10 2,340 1,220 11 2,350 1,420 12 2,570 1,710 Required: 1. What is the cost equation for maintenance costs using the high-low method? 2. Calculate the mean absolute percentage error (MAPE) for the cost equation you developed in requirement 1. Complete this question by entering your answers in the tabs below. Required 1 Required 2 What is the cost equation for maintenance costs using the high-low method? (Round "slope (unit variable cost)" to 2 decimal places. Include outliers in your calculations.) Maintenance costs + < Required 1 X ) Required 2 > Complete this question by entering your answers in the tabs below. Required 1 Required 2 Calculate the mean absolute percentage error (MAPE) for the cost equation you developed in requirement 1. (Input your final answer as a percentage rounded to 1 decimal place (i.e., 0.054 = 5.4%). Include any outliers in your calculations.) Mean absolute percentage error (MAPE) % < Required 1 Required 2 >