Exam 9: Project Scheduling: Pertcpm

Slack equals

Constraints in the LP models for crashing decisions are required to compare the activity's earliest finish time with the earliest finish time of each predecessor.

The earliest start time for an activity is equivalent to the latest of the earliest finish times for all its immediate predecessors.

The earliest start time for an activity is equal to the smallest of the earliest finish times for all its immediate predecessors.

Use the following network with activities and times estimated in days to answer questions a through a.What are the critical path activities? b.What is the expected time to complete the project? c. ​ c. What is the probability the project will take more than 28 days to complete? ​

From this PERT/CPM network,create a list of activities and their predecessors.​

PERT and CPM are applicable only when there is no dependence among activities.

Arcs in a project network indicate

The normal distribution tends to be a better approximation of the distribution of total time for shorter projects where the critical path has relatively few activities.

Precedence relationships among activities are critical in CPM analysis but not in PERT.

For an activity with more than one immediate predecessor activity,which of the following is used to compute its earliest finish (EF)time?

A senior MIS design class project team has developed the following schedule of activities for their project,using their best estimate of completion times.Both written and oral reports are required.Draw the project network.Can they complete the project in the 38 class days remaining until the end of the semester? ​

Use the following network of related activities with their duration times (weeks)to complete a row for each activity under the column headings below.

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 more than 28 weeks more or less than 50%?

Consider a project that has been modeled as follows: ​ a.Draw the PERT/CPM network for this project and determine the project's expected completion time and its critical path. b.Can activities E and G be performed simultaneously without delaying the minimum project completion time? c.Can one person perform A,G,and I without delaying the project? d.By how much can activities G and L be delayed without delaying the entire project? e.How much would the project be delayed if activity G was delayed by seven hours and activity L was delayed by four hours? Explain. ​

For an activity with more than one immediate successor activity,its latest finish time is equal to the

The latest finish time for an activity is the largest of the latest start times for all activities that immediately follow the activity.

The variance in the project completion time is the sum of the variances of all activities in the project.

Activities G,P,and R are the immediate predecessors for activity W.If the earliest finish times for the three are 12,15,and 10,then the earliest start time for W

Which of the following is always true about a critical activity?