Please include all work. This includes all formulas used in excel and those answers. Be clear and explain why you did each step. I am trying to teach myself!

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1. (12 points) Seven activities have been identied as part of completing a larger project. These activities have been labeled A through G in the following table, which also displays their immediate predecessors as well as the optimistic {a}. most probable (m) and pessimistic (b) expected completion times. [M M [C IJIA'l'l-j ACTIVITY 1: PREUECESSORS A l 2 3 B 2 3 4 C 4 S 6 A D 8 9 10 B E 2 S 8 C, D F 4 5 B G l 2 3 E The project network diagram is below. Calculate the expected time in weeks for each activity. Find the critical path and expected completion time, as well as the earliest start, earliest nish. latest start, and latest nish time for each activity