Task 1: Consider the following activity network and the PERT activity time estimates for each activity. Activity durations are in weeks. A C Start D H Finish G Task a m b to A 6 8 4 5 C 2 3 3 D 3.5 4 5 E 3 4 F 8 10 15 G 2 3 4 H 2 2 2.5 1. Calculate the expected time (te) and standard deviation (s) for each activity. 2. Calculate the expected time and the z value for the project completion. 3. What is the chance of not meeting the target date of the end of week 12