a pert network has three activities on critical path with mean time 3, 8 and 6 a

Question

A pert network has three activities on critical path with mean time 3, 8 and 6 and standard deviations 1, 2 and 2 respectively. the probability that the project will be completed in 20 days is

Options:

A . 0.50

B . 0.66

C . 0.84

D . 0.95

Answer: Option C
Explanation :

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