Activity Duration Activity Duration Immediate Predecessor(s) Immediate Predecessor(s) (Weeks) (Weeks) 4 F B 6 B 10 G 2 2 7 H F 8 D A 5 F G 11 E B B 3 J D, E 8 op a) Draw a network diagram and find the critical path and project completion time. b) Calculate float/slack of the all activities. c) If $1000 can be saved for each delayed day of activity H, then how much dollar can be saved keeping the project completion time unchanged? d) Activity G needs a delayed time of two weeks and an extra time of five weeks. Is it possible by keeping the project completion time unchanged? Explain. e)The PM wants to shorten the duration of the activity I from 11 weeks to 9 weeks. What is the impact of this change on project completion time