Concept explainers
Given the following information, answer the following:
Task |
Description |
Immediate predecessors |
Optimistic time |
Most likely time |
Pessimistic time |
Expected Time |
A |
Identify equipment requirements |
None |
4 |
6 |
8 |
6 |
B |
Solicit bids from vendors |
None |
6 |
8 |
16 |
9 |
C |
Select a system/vendor |
A,B |
2 |
4 |
6 |
4 |
D |
Place order for system |
C |
8 |
10 |
24 |
12 |
E |
redesign warehouse layout |
C |
7 |
10 |
13 |
10 |
F |
Implement new warehouse design |
E |
4 |
6 |
8 |
6 |
G |
Design system interfaced |
c |
4 |
6 |
20 |
8 |
H |
Integrate the interface into the system |
D, F, G |
4 |
6 |
8 |
6 |
I |
Install the system |
D, F |
4 |
6 |
14 |
7 |
J |
train system operators |
H |
3 |
4 |
5 |
4 |
k |
test system |
I, J |
2 |
4 |
6 |
4 |
Task |
Normal cost |
Crashed time |
Additional cost to crash 1 week |
A |
1000 |
4 |
450 |
B |
1000 |
7 |
400 |
C |
1500 |
2 |
600 |
D |
2000 |
8 |
300 |
E |
5000 |
7 |
1000 |
F |
3000 |
4 |
550 |
G |
8000 |
5 |
750 |
H |
5000 |
4 |
700 |
I |
10000 |
4 |
800 |
J |
4000 |
3 |
400 |
K |
5000 |
3 |
500 |
B-C-E-F-H-J-K = 9+4+10+6+6+4+4 = 43 weeks to complete on normal time= critical path
- What is the total cost required for completing this project on normal time?
What is the probability of completing the project in 40 weeks? Round calculations to at least 4 decimal places.
3. If Kerry Goins wishes to finish the project 2 weeks sooner, which activity(ies) should be crashed?
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