8. Attempt all the questions The following network diagram represents activities associated with a project Activities Optimistic time to Pessimistic time tp Most likely time tm 9 18 Determine the following - a b. d 1-2 1-3 1-4 2-5 4-6 3-7 5-7 6-7 7-8 6 12 22 17 12 18 884 12 21 38 22 24 26 14 10 6 32 16 18 14 10 8 4 expected completion time of each activity the earliest and latest expected completion times of each event. the critical path calculate floats for each activity. (10)