3.6) Stephen Hall is developing a program in supply chain management certification for managers. Hall has listed a number of activities that must be completed before a training program of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying table: a) Develop an AON network for this problem. b) What is the critical path? c) What is the total project completion time? d) What is the slack time for each individual activity? 3.13) A renovation of the gift shop at Orlando Amway Center has six activities (in hours). For the following estimates of a, m, and b, calculate the expected time and the standard deviation for each activity: 3.19) Three activities are candidates for crashing on a project network for a large computer installation (all are, of course, critical). Activity details are in the following table: a) What action would you take to reduce the critical path by 1 day? b) Assuming no other paths become critical, what action would you take to reduce the critical path one additional day? c) What is the total cost of the 2- day reduction