You have been recently assigned to provide an accurate project schedule for a large construction project. You are evaluating the network?

diagram for the on cstruction project. Your lead engineer has given you following estimates for critical path activity: days (optimistic), days (pessimistic), and days (most likely). What is the standard deviation for this activity, assuming a beta distribution?

A. None of the choices are correct

B..

C.3.

D.8.

E.