PLEASE ANSWER IN DEPTH

380 Case: Getting the Ducks in a Row for Project Management Roberta Rodriguez has been assigned the responsibility of managing the new layout design for her company's production facility in Tennessee. This redesign involves an analysis of the existing layout, identifying and analyzing improved layout solutions, selecting new equipment, designing the new layout, modifying the existing plant, and implementing the new production process. The company would like to complete the project as expeditiously as possible because the demand for its products is strong and because no production capacity will be available at Roberta's plant during the modication. Roberta has been meeting with plant management and engineers, and the following tasks and estimated task times required to complete the changeover have been identied: Activity Description Activity Label Summary: Project Management Predecessor Optimistic Time (days) Pessimistic Time (days) Analyze current A 5 7 15 layout Investigate B 10 15 30 alternative layouts Analyze proposed C B 10 30 45 layouts and identify solution Identify and D C 5 7 9 approve equipment vendors LI Summary: Project Management Source equipment D 45 60 90 Break down existing C 5 10 15 layout Update plant power F 3 8 12 infrastructure Install new G 5 9 16 equipment Train workers on H 8 12 20 new layout and equipment Test layout I 3 5 9 LI Revise layout as K C 2 4 6 needed Implement standard L K 2 3 4 operating procedures Questions 1. Draw the network diagram for the project. 2. Compute the expected activity times and activity time variances for each task. 3. Identify the project's critical path. 4. For what project duration could Roberta be 90 percent certain of completing the layout redesign project? 5. Which tasks, if any, would you recommend crashing