a a E 14 Task a b d e 11 4 6 4 17 b 14 6 7 24 19 t 17 10 11 28 24 6.33 7.5 21.33 19.5 Below are the optimistic (a), most likely (m) and pessimistic (b) times (in days) for the activities on the critical path for a large project. TASK amb A 11 14 17 B 4 6 10 C 6 7 11 D 4 24 28 17 19 24 E Copy data into Excel. 1. Find the project (critical path) expected time and standard deviation. 2. Find the probability of the project (critical path) being completed in 65 days. 3. How many days should be allocated to by 99% certain the project will be completed