Assuming that the ends of a range of estimates are +/- 3 sigma from the mean, which of the following range estimates involves the LEAST risk?
30 days, plus or minus 5 days
22 – 30 days
Optimistic = 26 days, most likely = 30 days, pessimistic = 33 days
Mean of 28 days
The estimate with the smallest range is less risky.
