Problem 1: Use the work breakdown structure (WBS) and activity duration data to do the following:
- On a separate sheet, create an activity on node (AON) diagram for this project. Draw it neatly. Identify the critical path.
- Calculate the Expected Time (TE) for each activity. All times are in weeks. Round off your answers for TE to two decimal places.
- Using the TE time, solve for the early start, early finish, late start, late finish, and slack time for each activity. Show your answers on the diagram.
- Calculate the weekly crash costs.
- Use the normal probability density function to estimate the probability that the project will be completed within 1 week of its scheduled completion time and to estimate a 90% Confidence interval for the project completion time.
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Activity | Predecessor | Optimistic Time | Most Likely Time | Pessimistic Time | TE | S | Available Crash Weeks | Crash Cost(Additional $ Above Activity PV) | Crash Cost Per Week |
A | — | 1 | 2 | 4 | 0 | NA | |||
B | A | 3 | 5 | 8 | 2 | $30,000 | |||
C | B | 4 | 7 | 12 | 0 | NA | |||
D | C | 2 | 3 | 5 | 0 | NA | |||
E | B | 6 | 8 | 12 | 2 | $25,000 | |||
F | E | 2 | 3 | 5 | 0 | NA | |||
G | E | 8 | 9 | 12 | 3 | $20,000 | |||
H | D, F, G | 1 | 2 | 3 | 0 | NA |
Requirements: Original work
Problem 1: Use the work breakdown structure (WBS) and activity duration data to do the following: