1. Construct the network for aerospace launch project below and find out its critical path.
| Activity |
TE (weeks) |
Preceding Activities |
| a |
3 |
none |
| b |
5 |
a |
| c |
3 |
a |
| d |
1 |
c |
| e |
3 |
b |
| f |
4 |
b, d |
| g |
2 |
c |
| h |
3 |
g, f |
| i |
1 |
e, h |
2. Resolve part (d) of problem 10 supposing the values of a and b are given at 95 percent level. Repeat, supposing the values are given at 90 percent level.
| Activity* |
a |
m |
b |
| AB |
3 |
6 |
9 |
| AC |
1 |
4 |
7 |
| CB |
0 |
3 |
6 |
| CD |
3 |
3 |
3 |
| CE |
2 |
2 |
8 |
| BD |
0 |
0 |
6 |
| BE |
2 |
5 |
8 |
| DF |
4 |
4 |
10 |
| DE |
1 |
1 |
1 |
| EF |
1 |
4 |
7 |