Questions from General Operations Management

Q: The following is a table of activities associated with a project at

The following is a table of activities associated with a project at Rafay Ishfaq’s software firm in Chicago, their durations, and what activities each must precede: a) Draw an AON...

Q: Dave Fletcher (see Problem 3.12) was able to

Dave Fletcher (see Problem 3.12) was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The...

Q: The Rover 6 is a new custom-designed sports car.

The Rover 6 is a new custom-designed sports car. An analysis of the task of building the Rover 6 reveals the following list of relevant activities, their immediate predecessors, and their duration:...

Q: Ross Hopkins, president of Hopkins Hospitality, has developed the tasks

Ross Hopkins, president of Hopkins Hospitality, has developed the tasks, durations, and predecessor relationships in the following table for building new motels. Draw the AON network and answer the qu...

Q: A renovation of the gift shop at Orlando Amway Center has six

A renovation of the gift shop at Orlando Amway Center has six activities (in hours). For the following estimates of a, m, and b, calculates the expected time and the standard deviation for each activi...

Q: Kelle Carpet and Trim installs carpet in commercial offices. Peter Kelle

Kelle Carpet and Trim installs carpet in commercial offices. Peter Kelle has been very concerned with the amount of time it took to complete several recent jobs. Some of his workers are very unreliabl...

Q: The estimated times and immediate predecessors for the activities in a project

The estimated times and immediate predecessors for the activities in a project at George Kyparis’s retinal scanning company are given in the following table. Assume that the activity...

Q: Rich Cole Control Devices, Inc., produces custom built relay devices

Rich Cole Control Devices, Inc., produces custom built relay devices for auto makers. The most recent project undertaken by Cole requires 14 different activities. Cole’s managers wou...

Q: Four Squares Productions, a firm hired to coordinate the release of

Four Squares Productions, a firm hired to coordinate the release of the movie Pirates of the Caribbean: On Stranger Tides (starring Johnny Depp), identified 16 activities to be completed before the re...

Q: Using PERT, Adam Munson was able to determine that the expected

Using PERT, Adam Munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) What is the probability...