A project manager is estimating activity durations. The team provides three estimates: optimistic 10 days, pessimistic 20 days, most likely 14 days. Using the PERT beta distribution, what is the expected duration?
Correct calculation using the PERT formula.
Why this answer
PERT expected = (O + 4M + P)/6 = (10 + 4*14 + 20)/6 = (10 + 56 + 20)/6 = 86/6 = 14.33 days.