Question: According to the PERT calculation, what is the standard deviation for the 3-point estimate of the following activity? Optimistic: 4 days; most likely: 5 days;

According to the PERT calculation, what is the standard deviation for the 3-point estimate of the following activity?

Optimistic: 4 days; most likely: 5 days; pessimistic: 10 days

(a) 1 day

(b) 5 days

(c) 5.67 days

(d) 6 days

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