Calculate Te Determine network duration TE 8'. critical PERT In Class Exercise path activities Calculate standard deviations 0 Calculate variances 02 Calculate variance of TE Calculate z score for desired time relative to PERT In Class Exercise expected time Determine expected probability 1"!" 9'9"?!\" .'-' Time Estimates (weeks) Activity Predecessor Opt Likely Pessimisti A 1 2 3 B 3 4 5 C A l 4 13 D A 2 3 7 E B 5 6 7 F C, D 2 3 10 G D. E 2 6 7 H F,G 3 5 10 1. What is the expected duration of this project? 2. What is the probability of completing this project 1 week before the expected completion time? 3. If you wanted to communicate to the CEO 3 duration which provided you with > 90% probability of certainty, what duration would you be comfortable communicating