Exam 7: Project Management

Use this information to answer the following questions. Consider the following set of activities that need to be completed by a chef to cook dinner for a party of 30 guests. Immediate Activity Predecessors A - B A C A D B, C E C F D, E -Refer to the information above.Assume that the chef was able to estimate the number of hours needed to complete each activity as follows. Activity Optimistic time Most Likely Time Pessimistic Time A 1 2 3 B 1 2 2 C 2 3 4 D 3 5 6 E 4 5 6 F 3 6 7 a.Use PERT to identify the expected time and variance for each activity. b.What is the critical path? c.What is the expected time and variance of the critical path? d.Determine the expected completion time of the project.

Use this information to answer the following questions. Consider the following set of activities. Immediate Activity Predecessors A - B - C - D A, B E C F D, E G E H F, G I F J I, H -Using the data above,develop a network for this project.

Suppose that the amount of time it takes to process insurance claims is normally distributed with a mean of 12 weeks and a variance of 9 weeks.What is the probability that the next claim will be processed within a.10 weeks? b.11 weeks? c.12 weeks? d.23 weeks?

Use this information to answer the following questions. Consider the following Activity-On-Node (AON)PERT project.The three values that represent each activity's completion time (in days)correspond to an optimistic time,most likely time,and pessimistic time,respectively. -Refer to the figure.What is the probability of not completing the project within 18 days?

Use this information to answer the following questions. Consider the following set of activities that must be completed in order to prep a new home for painting. Immediate Activity Predecessors A - B - C A, B D C E C F D, E G E H F, G -Refer to the information above.Assume that the painters were able to estimate the activity times as shown in the table below. Activity Time (Days) A 3 B 2 C 4 D 5 E 3 F 2 G 4 H 2 a.Calculate the slack for each activity. b.Calculate the earliest and latest start and finish times for each activity. c.Determine the critical path. d.Determine the length of the project.

Using the backward pass,we can compute the Late Finish time (LFT)and Early Finish time (EFT)for each activity.

Using the forward pass,the Early Start time (EST)and Early Finish time (EFT)for each activity are determined.

Use this information to answer the following questions. Consider the following Activity-On-Node (AON)project (activity completion times are in days). -Refer to the figure.What is the slack time,in days,associated with activity E?

Use this information to answer the following questions. Consider the following Activity-On-Node (AON)PERT project.The three values that represent each activity's completion time (in days)correspond to an optimistic time,most likely time,and pessimistic time,respectively. -Refer to the figure.What is the probability of completing the project within 18 days?

Use this information to answer the following questions. Consider the following Activity-On-Node (AON)project (activity completion times are in days). -Refer to the figure.What are the immediate predecessor(s)of activity D?

Slack for a given activity is computed as Late Finish minus Early Finish.

The Critical Path Method (CPM)is appropriate for projects where the time required to perform each activity is a random variable.

Any activity in the project network can be crashed in order to reduce the overall expected completion time.

Use this information to answer the following questions. Consider the following Activity-On-Node (AON)project (activity completion times are in days). -Refer to the figure.Suppose that additional resources are provided to crash the project completion time below its expected normal completion time.Which activities would be potential candidates for crashing?

Use this information to answer the following questions. Consider the following set of activities. Immediate Activity Predecessors A - B - C A, B D A, B E C, D F D G E, F H F I F J G, H K H, I L J, K -Assume that that time required to complete each activity is as follows. Activity Time (Days) A 3 B 4 C 5 D 3 E 2 F 1 G 4 H 3 I 2 J 5 a.Calculate the slack for each activity. b.Calculate the earliest and latest start and finish times for each activity. c.Determine the critical path. d.Determine the length of the project.

Dummy activities may be needed in Activity-On-Node networks to preserve precedence relationships between activities.

Use this information to answer the following questions. Consider the following set of activities. Immediate Activity Predecessors A - B - C - D A, B E C F D, E G E H F, G I F J I, H -Refer to the information above.Assume that that time required to complete each activity is as follows. Activity Time (Days) A 3 B 4 C 5 D 3 E 2 F 1 G 4 H 3 I 2 J 5 a.Calculate the slack for each activity. b.Calculate the earliest and latest start and finish times for each activity. c.Determine the critical path. d.Determine the length of the project.

Project scheduling is the phase that involves identifying required resources and precedence relationships between activities.

A company is faced with a project of implementing a new ERP system.The information on activity precedence,time,and cost is given below (time in weeks). Activity Predecessor(s) Standard Time Crash Time Standard Cost Crash Cost Crash Cost/Wk A none 9 7 \ 700 \ 1100 \ 200 B A 7 6 \ 600 \ 750 \ 150 C A 5 3 \ 500 \ 1000 \ 250 D B 4 2 \ 550 \ 800 \ 125 E C 6 5 \ 800 \ 900 \ 50 F D,E 5 3 \ 700 \ 1000 \ 150 G D 8 6 \ 1000 \ 1200 \ 100 The company would like to determine which activities to crash and by how much in order to complete the ERP implementation in 24 weeks.Using linear programming and Excel Solver,find the best solution

Use this information to answer the following questions. Consider the following Activity-On-Node (AON)project (activity completion times are in days). -Refer to the figure.What is the critical path?