Prestige Electronics is considering a new computer system to upgrade their inventory control unit. A computing department sent the following information about the system installation to management. (i). Determine the expected time and variance for each activity (4 marks) (ii). Draw the activity network for this project, showing the ES, EF, LS, LF and slack for each activity. ( 9 marks) (iii). State the critical path for the project. (1 marks) (iv). What are the expected time and variance of the project? (2 marks) (v). What is the probability that the project will be completed in 33 days? (4 marks)