2. The following table contains information about a project. Use it to answer the following: Activity Time Estimate Activity Variances Immediate Predecessors S(start) 0 0 A 6 3 S B 5 2.5 S 3 1.5 A D 2 1 A E 4 2 B F 6 3 B G 10 5 C.E H 7 3.5 D.F Z(end) 0 0 G.H (a) Draw the network diagram. (b) Determine the critical path. The longest time path through the network What is the expected project completion time? t = (a+4m+b)/6 (d) Determine ES, EF, LS, LF, and slack for each activity. The person you are working for would like to know the probability that the project will be completed in (i) 25 weeks, (ii) more than 25 weeks, (iii) less than 15 weeks.