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QUESTION SEVEN a) State four attributes of the Beta distribution which made it to be chosen as representing the distribution of activity times in project evaluation and review technique (PERT). b) Lillian Wambugu is the project manager of Jokete Construction Company. The company is bidding a contract to install telephone lines in a small town. It has identified the following activities along with their predecessor restrictions, expected times and worker requirements: Activity Predecessors Duration Crew Size Weeks Workers A W N NN WW + AWWAANNA B B D. E F. G Lillian Wambugu has agreed with the client that the project should be completed in the shortest duration. Required: i) Draw a network for the project. ii) Determine the critical path and the shortest project duration. iii) Lillian Wambugu will assign a fixed number of workers to the project for its entire duration and so she would like to ensure that the minimum number of workers is assigned and that the project will be completed in 14 weeks. Draw a schedule showing how the project will be completed in 14 weeks iv) Comment on the schedule you have drawn in (iii) above