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| Activity | Predecessor | Optimistic | Pessemistic | Expected | Variance |
| A | 2 | 6 | 4 | 0.44 | |
| B | 1 | 9 | 3 | 1.78 | |
| C | A | 2 | 6 | 4 | 0.44 |
| D | B | 5 | 17 | 9 | 4 |
| E | C | 3 | 11 | 5 | 1.78 |
| a) How many weeks should John Black allow for completion of the project if he is comfortable with only a 2.5% chance of being late? |
Expert Answer
a) Number of weeks that John Black should allow for completion of the project with only 2.5% chance of being late (i.e. 97.5% chance of completing within that time) = 16.2 weeks (in the above sceenshot, pls read weeks in place of days)
