A company has a PERT project with path b?d?e?g?i that has these activity time estimates in days:
$$\begin{array} { c c c c }
\text { Activity } & \begin{array} { c }
\text { Optimistic } \
\text { t }_o
\end{array} & \begin{array} { c }
\text { Most Likely } \
\text { t }_m \
\end{array} & \begin{array} { c }
\text { Pessimistic } \
\text { t }_p
\end{array} \
\hline \text { b } & 15 & 17 & 20 \
\text { d } & 21 & 22 & 22 \
\text { e } & 27 & 30 & 35 \
\text { g } & 23 & 27 & 29 \
\text {i}& 25 & 31 & 34 \

\end{array}$$
a. What is the expected duration for activity "e"?
b. What is the variance for activity "b"?
c. What is the standard deviation of the path?

Question

A company has a PERT project with path b?d?e?g?i that has these activity time estimates in days:
 $$\begin{array} { c c c c } 
 \text { Activity } & \begin{array} { c } 
\text { Optimistic } \
\text { t }_o
\end{array} & \begin{array} { c } 
\text { Most Likely } \
\text { t }_m \
\end{array} & \begin{array} { c } 
\text { Pessimistic } \
\text { t }_p
\end{array} \
\hline \text { b } & 15 & 17 & 20 \
 \text { d } & 21 & 22 & 22 \
 \text { e } & 27 & 30 & 35 \
 \text { g } & 23 & 27 & 29 \
\text {i}& 25 & 31 & 34 \

\end{array}$$ 
a. What is the expected duration for activity "e"?
b. What is the variance for activity "b"?
c. What is the standard deviation of the path?

Quizplus · Accepted Answer

The Answer of A company has a PERT project with path b?d?e?g?i that has these activity time estimates in days:
 $$\begin{array} { c c c c } 
 \text { Activity } & \begin{array} { c } 
\text { Optimistic } \
\text { t }_o
\end{array} & \begin{array} { c } 
\text { Most Likely } \
\text { t }_m \
\end{array} & \begin{array} { c } 
\text { Pessimistic } \
\text { t }_p
\end{array} \
\hline \text { b } & 15 & 17 & 20 \
 \text { d } & 21 & 22 & 22 \
 \text { e } & 27 & 30 & 35 \
 \text { g } & 23 & 27 & 29 \
\text {i}& 25 & 31 & 34 \

\end{array}$$ 
a. What is the expected duration for activity "e"?
b. What is the variance for activity "b"?
c. What is the standard deviation of the path?

A Company Has a PERT Project with Path B?d?e?g?i That