1. By performing the critical path analysis (use a scratch paper), what is the slack time of activity A
2. By performing the critical path analysis (use a scratch paper), what is the slack time of activity L
3. By performing the critical path analysis (use a scratch paper), what is the slack time of activity K
4. By performing the critical path analysis (use a scratch paper), what is the Earliest Finish (EF) of activity M
5. By performing the critical path analysis (use a scratch paper), what is the Earliest Finish (EF) of activity K
6. By performing the critical path analysis (use a scratch paper), what is the Latest Finish (LF) of activity L
7. By performing the critical path analysis (use a scratch paper), what is the Latest Finish (LF) of activity M
8. By performing the critical path analysis (use a scratch paper), what is the Latest Finish (LF) of activity A
9. Which of the following is the critical path for the wing assembly

EGKN

DFJM

EHKN

DGKN

EFMJL

ABIL

NONE of the above

10. What is the expected project length ( round to 2 decimals/ digits)?
11. What is the standard deviation of the project lengh (round to 2 decimals/ digits)?
12. What is the probability that the project will be completed in 45 hours or less? A normal distribution Z-table is provided

Section 2 To complete the wing assembly for an experimental aircraft, Scott De Witte has laid out the major steps Fourteen activities are involved. These activities have been labelled A through N in the following table, which also shows immediate predecessors of activities and their Expected time and variance (in hours) based on their optimistic, pessimistic, and most likely times. NB: When computing the expected times and the variances for the different tasks of the project round to 2 decimals/digits. IMMEDIATE MOST ACTIVITY OPTIMISTIC LIKELY PESSIMISTIC PREDECESSORS (b) (m) 6 4 8 B A 2 3 4 C 32 34 36 D 2 4 6 E 8 10 12 F 10 12 14 DE DE 19 20 21 H E 4 6 8 1 B 1 2 3 J F 6 8 10 K HG 4 13 16 L 1 10 13 16 M 9 5 7 CU K N 7 9 11