To answer these questions related to project management and network analysis (typically used in PERT/CPM methods), I need some additional information:

1. Activity Details: The duration of each activity, along with the optimistic time (O), most likely time (M), and pessimistic time (P) if using PERT.
2. Precedence Relationships: The sequence in which the activities must be performed, indicating which activities depend on the completion of others.
3. Critical Path Information: If the critical path is already calculated, you can provide it. If not, I'll need the network diagram or the relationships between activities.

Once you provide these details, I can calculate:

1. The expected project duration.
2. The standard deviation of the project.
3. The probabilities related to completion times.
4. Reasonable deadlines using the 3σ rule.
5. The critical path.

Feel free to upload any charts or provide the necessary details in text form.

Would you like to proceed with providing the additional information?