b. What is the difference in total project costs between the earliest completion time of the project using "normal" times and the minimum-cost schedule you derived in part (a)?

You are the manager of a project to improve a billing process at your firm. The table below contains the data you will need to conduct a cost analysis of the project. Indirect costs are $1,800 per week, and penalty costs are $1,400 per week after week 12 Immediate Predecessor(s) Normal Time (weeks) Crash Time (weeks) 4 5 Activity A B D E F Normal Cost ($) 5,500 8,500 4,500 5,500 4,000 4,000 3 1 3 Crash Cost ($) 7,500 9,500 4,500 12,000 7,000 7,000 1 6 A B B, C D 7 7 6 6 a. What is the minimum-cost schedule for this project? The minimum-cost schedule is weeks. (Enter your response as an integer.)