You may need to use the appropriate technology to answer this question. Blue Lagoon is...
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You may need to use the appropriate technology to answer this question. Blue Lagoon is a contractor that installs residential swimming pools, projects that consist of nine major activities. The activities, their immediate predecessors, and the activity time estimates (in days) are shown.
| Activity | Immediate Predecessor | Optimistic | Most Probable | Pessimistic |
| A | 3 | 5 | 6 | |
| B | 2 | 4 | 6 | |
| C | A,B | 4 | 5 | 6 |
| D | A,B | 8 | 10 | 11 |
| E | B | 2 | 4 | 6 |
| F | C | 1 | 2 | 3 |
| G | D | 4 | 9 | 11 |
| H | D, F | 5 | 7 | 9 |
| I | E,G,H | 3 | 4 | 5 |
(a) What are the critical activities? (Enter your answers as a comma-separated list.) (b) What is the expected time (in days) to complete the project? (Round your answer to two decimal places.) (c)Based only on the critical path, what is the estimated probability that the project can be completed in 27 or fewer days? (Round your answer to four decimal places.)
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