Consider the network described in the table below.   Activity Immediate Predecessor(s) Pessimistic Probable Optimistic J -- 15 10 8 K -- 9 8 7 L J 10 6 5 M J 3 3 3 N K, M 9 5 1 O K, M 10 7 4 P L, N 10 8 3   Draw the network diagram and answer the following questions. (a) Calculate the expected duration of each activity. (b) Calculate the expected duration and variance of the critical path. (c) Calculate the probability that the project will be completed in more than 28-time units

Given the information below, what are the estimated expected (mean) times (in weeks) for activities A-H?  What are the estimated standard deviations (in weeks) in the times for activities A-H?

draw the network diagram

Activity Preceded By ABCDEFG А ww ww A B,C D E BC F. G Expected Time Regular Crash 6 days 2 day 12 6 4 10 8 C 18 6 2 6 6 2 8 4 Direct Cost Regular Crash $2000 $3800 2000 10000 4000 4600 3900 5000 7600 16000 19600 2000 4000 1000 3400 2800 Requested: (a) Construct a network including the Early and Late Start and Finish times. (b) Identify the normal Critical Path(s) and the normal expected completion time (c) Can the project be crashed to last 18 days? Which activities should be crashed and at what additional cost?

QUESTION 8 Consider the activities, durations, and predecessor relationships in the following network, shown in Table 6 below. Draw the network and answer the questions that follow. Table 5 Pessimistic Activity Description Most Likely (Weeks) Immediate Optimistic Predecessor(s) (Weeks) (Weeks) A 4 10 --- A 2 8 20 A 12 16 D 1 2 E D, C 22 F 3 4 G F 2 2 F 6 8 10 E, G, H 4 8 12 J 2 3 a) What is the expected time for activity B? b) What is the variance for activity B? c) Based on the calculation of estimated times, what is the critical path? d) What is the estimated time of the critical path? e) What is the activity variance along the critical path? f) What is the probability of completion of the project before week 42?

2.1: For each of the following projects, determine the shape of its life cycle (S or J): SOLUTION (Answer just near the name of the project) • Building a nuclear station for electrical power generation– • Achieving an ILETS minimum score – • Organizing a wedding party – • Getting a masters degree in engineering management –

The manager of the Oak Hills Swimming Club is planning the club’s swimming team program. The first team practice is scheduled for May 1. The activities, their immediate predecessors, and the activity time estimates (in weeks) are as follows:     Activity   Optimistic Most Probable   Pessimistic Immediate Predecessors A 1 2 3 - B 4 6 8 A C 2 4 6 A D 1 2 3 B, C E 2 3 4 B F 1 2 3 A G 1 2 3 D H 1 2 3 G I 1 1 1 E, H, F           A. Draw a project network for this problem.   B. Fill in all the blanks in the following table.   Note: For variance (σ2) in activity time, keep two decimal places.     Activity Expected Time t (weeks) Variance σ2   ES   EF   LS   LF   Slack Critical Path? A                 B                 C                 D…

Network Analysis Given this WBS, draw out a network diagram and use the two-pass and enumera methods to answer the following questions. Activity LCT 50 - b a-d-g-j Predecessor Ob-f-i Oa-c-f-i a-e-h-j a a a b, c d d, e f g, h <*** Duration 5 days Saved 434 994 6 4 5 Question 6 (1 point) Consider the network above. What is the critical path for this project? 6 6

Develop a project network.  Determine the expected project completion time.  What is the probability that the project completion time will be completed? With in 2 weeks earlier than the expected project completion time?  With in 1.5 week more than the expected project completion time ?

Case Study The South-to-North Water Diversion Project in China is the largest of its kind ever undertaken. The project involves drawing water from southern rivers and supplying it to the dry north. This massive scheme has already taken 50 years from conception to commencement and is expected to take almost as long to construct. Planned for completion in 2050, it will eventually divert 44.8 billion cubic metres of water annually to the population centres of the drier north. When finished, the work will link China's four main rivers - the Yangtze, Yellow River, Huaihe and Haihe - and requires the construction of three diversion routes, stretching south-to-north across the eastern, central and western parts of the country. The complete project is expected to cost $62bn - more than twice as much as the country's controversial Three Gorges Dam.