Excel can be used, the POM software is not mandatory.

Yearly Maintenance Cost ($) Age (years) Yearly Maintenance Cost ($) Age (years) 4.5 619 5.0 1,194 4.5 1,049 0.5 163 4.5 1,033 0.5 182 4.0 495 6.0 764 4.0 723 6.0 1,373 4.0 681 1.0 978 5.0 890 1.0 466 5.0 1,522 1.0 549 5.5 987 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. b. If a section has 20 three-year-old tractors, what is the fore- cast for the annual maintenance cost