Question: Q1: The project manager for a specific mechanical engineering project assigns 10 different activities to complete this project successfully. These activities have several immediate predecessors

Q1: The project manager for a specific mechanical

Q1: The project manager for a specific mechanical engineering project assigns 10 different activities to complete this project successfully. These activities have several immediate predecessors as it shown in the table below. [10 marks] Most Likely (Weeks) 7 8 12 2 Activity Immediate Description Predecessor(s) A B A A D B E D,C F G F H F I E, G, H I Optimistic (Weeks) 4 2 8 1 6 2 2 6 4 1 Pessimistic (Weeks) 10 20 16 3 22 4 2 10 12 3 8 3 2 8 8 2 Answer the following questions and show detailed calculations. 1. Draw the project network [2 marks] 2. What is the expected time for activity B? [1 mark] 3. What is the variance for activity B? [1 mark] 4. Based on the calculation of estimated times (expected duration), what is the critical path? [1 mark] 5. What is the estimated time of the critical path? [lmark] 6. What is the activity variance along the critical path? [lmark] 7. Based on regular CPM calculations, what is the critical path? [lmark] 8. What is the probability of completion of the project before week 42? [2 marks]

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