Calculating the Probabilityof Project Completion:
A) The probability of completing the project in a specified scheduled time involves calculating the number of standard deviations the desired completion time is from the average project duration (the sum of all average activity times on the critical path)
B) Weighted Average Activity Time, z = (TS-TE)/√(∑σ_{t}^{2})
C) Standard deviation of activity times, σ_{t} = (b-a)/6
D) Standard deviation of project completion, σ_{T }= √(∑σ_{t}^{2})