a) Calculate the expected time () and variance for each activity ACTIVITY Preceding OPTIMISTIC (a) MOST LIKELY (m) PESSIMISTIC (b) EXPECTED TIME (0) VARIANCE A 1 3 3 N B - 2. 5 00 C A 4 4 5 6 D 1 1 N 3 E B, C 3 9 6 6 F D 3 9 3 1 9 3 G E, F 1 2 3 b) Find ES, EF, LS, LF, and the Slack time for each activity (using the expected time (t) from the previous table) ACTIVITY Normal Proceeding Expected Time Earlies Earliest Latest Latest Start Finish Start Finish SLACK Critical Bath B A D E B, C D F G E, F c) Draw the Project Network d) What is the project completion time? e) What are the activities along the critical path? 1) What is the project variance of the critical bath? g) List two purposes of project scheduling & techniques. h) Project control reports give us the opportunity to understand several things, mention two