Table 11-3

-According to Table 11-3, there are five activities in a PERT project.If the normal distribution were used to find the probability of finishing this project in 24 weeks or fewer, what mean and variance would be used?
A)30 and 5.222
B)20 and 5.222
C)30 and 4.222
D)22.667 and 1.111

Question

Table 11-3
 
-According to Table 11-3, there are five activities in a PERT project.If the normal distribution were used to find the probability of finishing this project in 24 weeks or fewer, what mean and variance would be used?
A)30 and 5.222 
B)20 and 5.222 
C)30 and 4.222 
D)22.667 and 1.111

Quizplus · Accepted Answer

The mean (expected time) for the project is calculated by adding the expected times for all activities. The variance is calculated by adding the variances of all activities. The correct mean and variance are those that correspond to the total project duration calculated using the PERT formula, which in this case is option D.

Table 11-3 -According to Table 11-3, There Are Five Activities in a Five