The estimated times and immediate predecessors for the activities in a project at Caesar Douglas's screening company
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Question:
The estimated times and immediate predecessors for the activities in a project at Caesar Douglas's screening company are given in the following table. Assume that the activity times are independent. All times are in weeks.
| Activity | Predecessors | Optimistic Time (a) | Most Likely Time (m) | Pessimistic Time (b) |
| A | -- | 9 | 10 | 11 |
| B | -- | 4 | 10 | 16 |
| C | A | 9 | 10 | 11 |
| D | B | 5 | 8 | 11 |
1.What is the critical path based on expected times?You may use any method to determine this?
2. What is the probability of completing the project in exactly 20 weeks?
3. What is the probability of completing the project in 21 weeks or less?
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