A company has used PERT for a project and wants to minimize the probability of overrunning a contract deadline of 30 weeks. Three paths of concern in the PERT network have these mean durations and variances in weeks:
$$\begin{array} { c c c }
\text { Path } & \mathrm { t } & \mathrm { V } _ { \mathrm { t } } \
\hline 1 & 27 & 2.32 \
2 & 25 & 4.12 \
3 & 29 & 1.89
\end{array}$$
a. What is the Z-score for path 1?
b. What is the probability of path 2 overrunning the deadline?

Question

A company has used PERT for a project and wants to minimize the probability of overrunning a contract deadline of 30 weeks. Three paths of concern in the PERT network have these mean durations and variances in weeks:
 $$\begin{array} { c c c } 
\text { Path } & \mathrm { t } & \mathrm { V } _ { \mathrm { t } } \
\hline 1 & 27 & 2.32 \
2 & 25 & 4.12 \
3 & 29 & 1.89
\end{array}$$ 
a. What is the Z-score for path 1?
b. What is the probability of path 2 overrunning the deadline?

Quizplus · Accepted Answer

The Answer of A company has used PERT for a project and wants to minimize the probability of overrunning a contract deadline of 30 weeks. Three paths of concern in the PERT network have these mean durations and variances in weeks:
 $$\begin{array} { c c c } 
\text { Path } & \mathrm { t } & \mathrm { V } _ { \mathrm { t } } \
\hline 1 & 27 & 2.32 \
2 & 25 & 4.12 \
3 & 29 & 1.89
\end{array}$$ 
a. What is the Z-score for path 1?
b. What is the probability of path 2 overrunning the deadline?

A Company Has Used PERT for a Project and Wants