Activity B C D E F G H J K L M Weekly Pessimistic Time 10 6 12 6 2 3 2 8 12 26 12 6 8 Week Q34295675

ActivityABCDEFGHIJKLMweekly Pessimistic Time106126232812261268Weekly Most Likely Time2846322286227Weekly Optimistic Time243212166201034Immediate Successor_AACC-B, C, DEEFE, G, HJK

Required

1. Using Expected Time find out critical Path

2. What is Expected Start, Expected Finish, Latest Start, LatestFinish for each Activity

3. What is the slack Time of activity E, H, J, K and M

4. What the variance along Critical Path?

Expert Answer

Expected time = optimistic time + 4 x Most likely time +pessimistic time /6

Variance = [ pessimistic time – optimistic time/6]2

ActivityTPTmToTesigma^2A10223.3333331.777778B68470.111111C12435.1666672.25D6625.3333330.444444E2312.50.027778F3222.1666670.027778G2211.8333330.027778H8263.6666670.111111I12868.3333331J2662011.666671K1221050.111111L6232.8333330.25M8746.6666670.444444

Ans 1

Critical path is ACEHKM with a duration of 26.31

Ans 4 Variance of critical path is 4.713

Ans 2

ActivityESEFLSLFSlackA03.3303.330B3.3310.335.8212.822.49C3.338.493.338.490D8.4913.829.4912.821E8.4910.998.4910.990F02.169.6611.829.66G13.8215.6512.8214.651H10.9914.6510.9914.650I10.9919.3217.9826.316.99J2.1613.8211.8223.489.66K14.6519.6514.6519.650L13.8216.6523.4826.319.66M19.6526.3119.6526.310

3.