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# TOPIC: PERT PMP Question

## PERT PMP Question 6 years 3 weeks ago #10572

 Anurag Singh Topic Author Visitor Can somebody please provide explanation to the following PERT Question from Oliver Lehmann's free sample questions: Together with your team, you applied three-point estimation on a critical path which consists of two activities. The following duration uncertainties are all calculated assuming a ±3sigma confidence interval. The duration uncertainty—defined as pessimistic minus optimistic estimate—of the first activity is 18 days; the second estimate has an uncertainty of 24 days. Applying the PERT formula for paths, what is the duration uncertainty of the entire path? 94 o 21 days o 30 days o 42 days o No statement is possible from the information given. The correct answer is 21 days, but I am not sure how arrive at this answer. Please advise. Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.

## PERT PMP Question 4 years 2 months ago #16750

 Anonymous Topic Author Visitor First P-O = 18 Second P-O = 24 2P-2O = 42 So, P-O = 21 Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.

## PERT PMP Question 3 years 6 months ago #19022

 Jenny Topic Author Visitor Can somebody explain this a little bit more? Still not quite understand. Your e-mail address will never be displayed on the site. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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