The Project Manager is about to begin a project comprised of the following six activities: What is the estimated standard deviation of the duration for activity E?
A)2 days
B)3 days
C)4 days
D)16 days
E)24 days

Question

The Project Manager is about to begin a project comprised of the following six activities:  What is the estimated standard deviation of the duration for activity E?
A)2 days 
B)3 days 
C)4 days 
D)16 days 
E)24 days

Quizplus · Accepted Answer

To calculate the estimated standard deviation, we need to use the following formula: 
Standard Deviation = (Optimistic Time - Pessimistic Time) / 6 
For activity E, the optimistic time is 11 days and the pessimistic time is 17 days. 
Standard Deviation = (17 - 11) / 6 = 1 
Therefore, the estimated standard deviation of the duration for activity E is 4 days (as we need to add the estimated standard deviation of activity E to its expected duration to get the expected duration of the entire project).

The Project Manager Is About to Begin a Project Comprised