18. Refer to the previous question. Suppose a partner in Keone Technology does not be- lieve the time estimates for each activity can be specified
18. Refer to the previous question. Suppose a partner in Keone Technology does not be-
lieve the time estimates for each activity can be specified with certainty. Instead, he
prefers to specify a minimum, most likely, and maximum number of days for each
activity. These estimates are given in the following table.
Activity
Minimum
Most Likely
Maximum
5
10
20
16
19
27
10
13
18
8
14
14
21
a. Use PERT to identify the expected time and variance for each activity.
b. is the critical path? is the expected time and variance for this path?
c. Assume the distribution of the completion time for the critical path is normally
distributed. is the probability that it will take at least 40 days to complete
the project?
19. Refer to the previous question.
`reate a spreadsheet model to simulate the comple-
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