Project planners have sought the judgment of various knowledgeable engineers, vendors, and foremen and have developed...

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Project planners have sought the judgment of various knowledgeable engineers, vendors, and foremen and have developed the time estimates for the plant construction project as shown in the table below. Activity Description code Design plant A Select site B Select personnel C Select vendor D Project site E Manufacture generator F prepare manual G install generator H train operators! License I Predecessor Optimistic Most likely None A A A B C D E F C C E.F D, G G H Time estimates (in months) Activity Immediate O predecessors None None A B B C,D E F.G 2 14 4 3 3 5 4 a. Determine the critical path. b. What is the probability that the project will be finished in 4 years? c. What is the probability that it will take more than 50 months? M 7 3 1 1 12 7 5 2 2. The PERT estimates (in weeks) of a project plan are shown in the following table: a. Calculate the expected completion time. b. What is the probability that the project will be completed within 20 weeks? 3 11 3 18 6 4 7 5 7 12 5 4 Pessimistic 6 7 15 34 3- 4 3 19 27 7 8 11 15 Project planners have sought the judgment of various knowledgeable engineers, vendors, and foremen and have developed the time estimates for the plant construction project as shown in the table below. Activity Description code Design plant A Select site B Select personnel C Select vendor D Project site E Manufacture generator F prepare manual G install generator H train operators! License I Predecessor Optimistic Most likely None A A A B C D E F C C E.F D, G G H Time estimates (in months) Activity Immediate O predecessors None None A B B C,D E F.G 2 14 4 3 3 5 4 a. Determine the critical path. b. What is the probability that the project will be finished in 4 years? c. What is the probability that it will take more than 50 months? M 7 3 1 1 12 7 5 2 2. The PERT estimates (in weeks) of a project plan are shown in the following table: a. Calculate the expected completion time. b. What is the probability that the project will be completed within 20 weeks? 3 11 3 18 6 4 7 5 7 12 5 4 Pessimistic 6 7 15 34 3- 4 3 19 27 7 8 11 15