Question

1. A project has the following tasks and duration estimates given. These three tasks are done in succession on a project.

Task	Optimistic Estimate	Most Likely Estimate	Pessimistic Estimate
Alpha	30 days	40 days	50 days
Beta	20 days	25 days	28 days
Charlie	4 days	10 days	12 days
Delta	25 days	30 days	50 days

1. What is the expected duration for the project? (3 points)

2. What is the variance for the project? (3 points)

3. What is the standard deviation of the project? (3 points)

4. What is the range of the duration of the project given 3 sigma? (3 points)

Answer 1