(PERT project scheduling) Predecessors Optimistic Time (a) Most Likely Time (m) Pessimistic Time (b) A 0.5 1 1.5 B A 2 4 5 C A 2 3 6 D A 6 7 8 E B 4 6 7 F C, D 1 2 2.5 G E, F 6 7 9 H D 6 9 11 I G, H 2 4 6 EXPECTED ACTIVITY What are the expected time(E) and the variance of expected time (2) for each activity? Identify the critical path and determine the expected time to complete the project (Ecp). Compute the variance of the critical path duration (cp2). Whatistheprobabilitythattheprojectwillbecompletedin24daysorless? What is the probability that the project will be completed in 21 days or less? What is the probability that the project will be completed in 20 days or more? VARIANCE