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A mining project is composed of five activities whose three time estimates
in months are given below:
The standard deviation of the project length in months is
A mining project is composed of five activities whose three time estimates
in months are given below:
| Activity | Estimated duration (months) | ||
| Optimistic time | Most likely time | Permissible time | |
| 1-2 | 1 | 1 | 7 |
| 1-3 | 2 | 5 | 8 |
| 2-4 | 1 | 1 | 7 |
| 3-4 | 2 | 5 | 14 |
| 4-5 | 3 | 6 | 15 |
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