& Problem 5 Question Help The materials handling manager of a manufacturing company is trying to forecast the cost of maintenance for the company's fleet of over-the-road tractors. The manager believes that the cost of maintaining the tractors increases with their age. The following data was collected: Age (years) 6.5 5.5 6.5 7.0 6.0 6.0 8.0 7.0 7.5 Yearly Maintenance Cost ($) 1.119 1,549 1,533 995 1.223 1,181 1,390 2,022 1,487 Age (years) 6.0 2.5 2.5 7.0 8.0 3.0 3.0 3.0 Yearly Maintenance Cost ($) 1,894 663 682 1.264 1,873 1.478 966 1,049 a. Use POM for Windows' least squares-linear regression module to develop a relationship to forecast the yearly maintenance cost based on the age of a tractor. (Enter your responses rounded to three decimal places and include a minus sign if riccossary) Y = 631.94 + 120.26 X where Y = Yearly maintenance cost in dollars and X = Age In years. b. If a section has 30 two-year-old tractors, what is the forecast for the annual maintenance cost? S. (Enter your response rounded to two decimal places.)