Exam 9: Project Scheduling: Pertcpm

The project manager should monitor the progress of any activity with a large time variance even if the expected time does not identify the activity as a critical activity.

For the project represented below,determine the earliest and latest start and finish times for each activity as well as the expected overall completion time.

Consider the following PERT/CPM network with estimated times in weeks.The project is scheduled to begin on May 1. The three-time estimate approach was used to calculate the expected times and the following table gives the variance for each activity: ​ a.Give the expected project completion date and the critical path. b.By what date are you 99% sure the project will be completed?

A project has the following activities,precedence relationships,and time estimates in weeks: ​ ​ a.Compute the expected time and variance for each activity. b.Determine the critical path and the expected duration of the project. c.What is the probability that the project will take longer than 56 weeks to complete?

Marcy Fetter,a staff analyst at the Los Angeles plant of Computer Products Corporation,is assigned to the team that is developing the process design for producing an RFID sensor.The corporate planning group in San Jose,California,has contacted her and asked how confident the design group is about completing the project in 60 days.She has developed the following estimated time durations in days for the project: ​ ​ a.Compute the expected time and variance for each activity. b.Determine the critical path and expected duration of the project. c.What is the probability that the project will take longer than 58 days to complete? d.Which path in the project network offers the greatest risk of overrunning a new deadline of 56 days? ​

When activity times are uncertain,

A project network is shown below.Use a forward and a backward pass to determine the critical path,and then fill out the table below.Activity times are in weeks. ​ Now assume that the times listed are only the expected times instead of being fixed times.Is the probability of being finished in fewer than 25 weeks more or less than 50%? ​

In deciding which activities to crash,one must crash

The length of time an activity can be delayed without affecting the project completion time is the slack.

It is possible to have more than one critical path at a time.

Activities K,M,and S immediately follow activity H,and their latest start times are 14,18,and 11.The latest finish time for activity H

To calculate an activity's latest finish time,you should consider its

A project consists of five activities.Naturally,the paint mixing precedes the painting activities.Also,both ceiling painting and floor sanding must be done prior to floor buffing. ​ a.Construct the PERT/CPM network for this problem. b.What is the expected completion time of this project? c.What is the probability that the project can be completed within nine hours? ​

From this schedule of activities,draw the PERT/CPM network.

To determine how to crash activity times,

Which of the following is a general rule for crashing activities?

Crashing refers to an unanticipated delay in a critical path activity that causes the total time to exceed its limit.

Which of the following is NOT a significant challenge of project scheduling?

A key distinction of the critical path is that all activities on the critical path have zero slack time.

The final activity's earliest finish time is the anticipated project duration.