Question: i need help with b. and c. 1. Consider a project that has been modeled as in Table 1. Table 1: Activities and Predecessors Activity

i need help with b. and c.

1. Consider a project that has been modeled as in Table 1. Table 1: Activities and Predecessors Activity Immediate Predecessors Duration A 7 B 6 C 3 D B.C 12 E B.C 14 F D.E 5 a. Draw the PERT/CPM network for this project and determine the project's expected completion time up and its critical path. b. Suppose the standard deviations of the activity durations are da OB = 1, og = 0, Op = 1, p = 2, and p = 1. Then please estimate the standard deviation of the overall project's standard deviation op. c. Suppose for the standard Normal random variable 2, we know PILIS ZS +1 -68%, PL-2 SZS +2 95%, and Pl-3 S2 S +3 = 99.7%. Then, approximately what time I is one for which there is only a less than 16% chance for the completion time to beat (be shorter than)

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