Question: Consider the project described in the following table: ACTIVITY PREDECESSORS DURATION (weeks)* A - N(4,1) B - N(6,2) C - U(7,11) D A T(4,6,8) E
Consider the project described in the following table:
| ACTIVITY | PREDECESSORS | DURATION (weeks)* |
| A | - | N(4,1) |
| B | - | N(6,2) |
| C | - | U(7,11) |
| D | A | T(4,6,8) |
| E | A | T(1,3,8) |
| F | B | U(6,10) |
| G | C | N(4,1) |
| H | C | N(7,2) |
| I | D | U(2,4) |
| J | E,F,G | T(3,5,8) |
| K | E,F,G | T(1,2,5) |
| L | H,K | N(5,1) |
| M | I,J,L | U(2,4) |
* U(x,y): Duration of the activity has a uniform distribution between x and y
N(x,y): Duration of the activity has a normal distribution with mean x and standard deviation y
T(x,y,z): Duration of the activity has a triangular distribution with parameters x, y
and z.
(a). Draw the network diagram for the project.
(b) For this part of the question assume that each activity has a known deterministic duration which is equal to the mean duration given in the table above. Note that mean of a uniform distribution is (x+y)/2 and the mean of a triangular distribution is (x+y+z)/3. Please answer the following questions.
- Identify the critical path,
- How long will the project take?
(c). How many possible paths does this project have? Please identify them.
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