Consider the following work breakdown structure: $\begin{array}{cccccc}
&\text { Start }&\text { Finish }&&\text { Duration (Days) } \
\text { Activity } & \text { Node } & \text { Node } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \
\hline \text { A } & 1 & 2 & 41 & 50 & 59 \
\text { B } & 1 & 3 & 54 & 60 & 66 \
\text { C } & 2 & 4 & 58 & 70 & 82 \
\text { D } & 3 & 4 & 32 & 41 & 44
\end{array}$ What is the estimated standard deviation in the time for activity D?
A) 0 days
B) 2 days
C) 3 days
D) 4 days
E) 12 days

Question

Consider the following work breakdown structure: $\begin{array}{cccccc}
&\text { Start }&\text { Finish }&&\text { Duration (Days) } \
\text { Activity } & \text { Node } & \text { Node } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \
\hline  \text { A } & 1 & 2 & 41 & 50 & 59 \
\text { B } & 1 & 3 & 54 & 60 & 66 \
\text { C } & 2 & 4 & 58 & 70 & 82 \
\text { D } & 3 & 4 & 32 & 41 & 44
\end{array}$ What is the estimated standard deviation in the time for activity D?
A) 0 days
B) 2 days
C) 3 days
D) 4 days
E) 12 days

Quizplus · Accepted Answer

To calculate the estimated standard deviation for activity D, we need to use the formula: 
SD = (Pessimistic - Optimistic) / 6 
For activity D: 
SD = (44 - 32) / 6 = 2 
Therefore, the answer is B.

Consider the Following Work Breakdown Structure What Is the Estimated Standard Deviation in the Time for