NETWORK: PERT 4 WEEK 6

Consider the following table:

ACTIVITY PREC. ACT. TIME ESTIMATES (days)

t_o t_ml t_p t_e

A --- 1 2 3

B A 2 4 6

C B 1 4 7

D B 3 4 5

E C 1 3 5

F D, E 2 3 4

1) Construct a PERT network.

[NOTE: This is the most crucial part of the exercise. Make sure you have the correct network before proceeding to the next sections.]

2) By using ES, EF, LF, LS, find the slack of each activity and the critical path.

3) Find the completion time ( ) and the standard deviation () for the project round off the standard deviation to the nearest hundredth: two decimal places.

4) What is the completion time at 95% confidence level?

5) What is the likelihood of this project being completed earlier than 14 days?

6) Between 13 and 15 days?