1. Task time estimates for the modification of an assembly line at Jim Goodale's Carbondale, Illinois, factory are as follows: Activity Immediate Predecessors B D E F G Time (in hours) 6 7 5 8 5 8 4 B,C B, C D E. a. Draw the project network using AON. b. Identify the critical path c. What is the expected project length? d. Create a gantt chart for the project. 2. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time and the critical path should also be determined. Here are the activity times: Activity ES EF LS UF Slack Immediate Predecessor Time (weeks) 6 S 3 B C D E F G H 4 A B B CE D, F 7 6 5 Inited States Focus MacBook Air & 4 5 Illil 10 III Abbcode Aalbode AaBbocDc ABCD AaE llll Normal No Spacing Heading 1 Heading 2 Title 3. Development of Version 2.0 of a particular accounting software product is being considered by Jose Noguera's technology firm in Baton Rouge. The activities necessary for the completion of this project are listed in the following table: Activity Normal Time Crash Time Normal Cost Crash Cost Immediate (weeks) (weeks) Predecessor(s) 5 4 $2,000 $2,700 B 2. 1 2,200 2,600 C 3 3 500 500 D 3 2,300 A E 3 900 1,350 B F 4 3 3,000 3,600 G 4 2 1,400 1,800 DE 7 2,700 6 a. What is the length of project on normal time? b. What is the total cost required for completing this project on normal time? c. If you wish to reduce the time required to complete this project by 1 week, which activity should be crashed, and how much will this increase the total cost? d. What is the maximum time that can be crashed? How much would costs increase? C Focus MacBook Air