Excel work

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Given the following information, compute the required items: Florida Power & Light is attempting to modernize the meters placed at people houses. The company Operations Manager, Mr. Jacob Marina, has asked for your assistance in preparing part of the project plan. Mr. Marina has identified the tasks, durations (in days), and predecessor relationships, and provides them in the following table:
Activity 
Immediate Predecessor(s)
Most Optimistic
Likely 
Pessimistic 
A
—
1
2
4
B
A
2
4
8
C
B
3
5
15
D
C
3
5
12
E
D
4
5
11
F
D
4
6
17
G
E
2
3
8
H
E
1
2
4
I
E
1
3
6
J
G, H, I
2
4
12
K
J
2
3
7
L
H
2
4
9
M
L
2
4
9
N
K, M
3
4
12
O
E, F
5
10
22
P
N, O
1
2
5
Required: 1. Draw the Activity on Node (AON) network. 2. Determine the expected completion time and variance for each activity. 3. Determine the total project completion time and activities along the critical path for the project. 4. Determine ES, EF, LS, LF, and slack for each activity. 5. Identify which activities are candidates for crashing, and explain why.
You need to submit your written paper to this link. Please show your work, if using Excel for calculations then submit both the written part and the Excel work sheet.