Operations Management
11th Edition
ISBN: 9780132921145
Author: Jay Heizer
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 4P
Given the activities whose sequence is described by the following table, draw the appropriate activity-on-arrow (AOA) network diagram.
- a. Which activities are on the critical path?
- b. What is the length of the critical path?
| ACTIVITY | IMMEDIATE PREDECESSOR(S) | TIME (DAYS) | ||
| A | - | 5 | ||
| B | 2 | |||
| C | 4 | |||
| D | 5 | |||
| E | 5 | |||
| F | 5 | |||
| G | E, F | 2 | ||
| H | 3 | |||
| I | G, H | 5 | ||
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Given the activities whose sequence is described by thefol lowing table, draw the appropriate activity-on-arrow (AOA)network diagram.a) Which activities are on the critical path?b) What is the length of the critical path?
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Develop the appropriate PERT network using an Activity-on-Arrow Diagram. Be sure to indicate the Activity ID and duration on the arrows properly. Number the nodes properly.
Chapter 3 Solutions
Operations Management
Ch. 3 - Give an example of a situation in which project...Ch. 3 - Explain the purpose of project organization.Ch. 3 - What are the three phases involved in the...Ch. 3 - What are some of the questions that can be...Ch. 3 - Define work breakdown structure. How is it used?Ch. 3 - What is the use of Gantt charts in project...Ch. 3 - What is the difference between an...Ch. 3 - What is the significance of the critical path?Ch. 3 - What would a project manager have to do to crash...Ch. 3 - Describe how expected activity times and variances...
Ch. 3 - Define earliest start, earliest Finish, latest...Ch. 3 - Students are sometimes confused by the concept of...Ch. 3 - What are dummy activities? Why are they used in...Ch. 3 - What are the three time estimates used with PERT?Ch. 3 - Would a project manager ever consider crashing a...Ch. 3 - How is the variance of the total project computed...Ch. 3 - Describe the meaning of slack, and discuss how it...Ch. 3 - How can we determine the probability that a...Ch. 3 - Name some of the widely used project management...Ch. 3 - The work breakdown structure (WBS) for building a...Ch. 3 - 3.2 Robert Day has decided to run for a seat as...Ch. 3 - Draw the activity-on-node (AON) project network...Ch. 3 - Given the activities whose sequence is described...Ch. 3 - 3.5 Using AOA, diagram the network described below...Ch. 3 - Stephen Hall is developing a program in supply...Ch. 3 - Task time estimates for the modification of an...Ch. 3 - 3.8 The City Commission of Nashville has decided...Ch. 3 - Refer to the table in Problem 3.8. a. Draw the AON...Ch. 3 - The activities needed to build a prototype laser...Ch. 3 - Dave Fletcher (see Problem 3.10) was able to...Ch. 3 - The activities described by the following table...Ch. 3 - A renovation of the gift shop at Orlando Amway...Ch. 3 - Kelle Carpet and Trim installs carpet in...Ch. 3 - The following is a table of activities associated...Ch. 3 - Assume that the activities in Problem 3.15 have...Ch. 3 - Bill Fennema, president of Fennema Hospitality,...Ch. 3 - What is the minimum cost of crashing the following...Ch. 3 - Three activities are candidates for crashing on a...Ch. 3 - Development of Version 2.0 of a particular...Ch. 3 - The estimated times and immediate predecessors for...Ch. 3 - Rich Cole Control Devices, Inc., produces...Ch. 3 - Four Squares Productions, a firm hired to...Ch. 3 - Using PERT, Adam Munson was able to determine that...Ch. 3 - Clark Products makes pizza ovens for commercial...Ch. 3 - The Tesla 6 is a new custom-designed sports car....Ch. 3 - TABLE 3.6 Southwestern University Project 1....Ch. 3 - TABLE 3.6 Southwestern University Project 2 What...Ch. 3 - TABLE 3.6 Southwestern University Project 3. If it...Ch. 3 - Project Management at Arnold Palmer Hospital Video...Ch. 3 - The equivalent of a new kindergarten class is born...Ch. 3 - The equivalent of a new kindergarten class is born...Ch. 3 - The equivalent of a new kindergarten class is born...Ch. 3 - At the Hard Rock Cafe, like many organizations,...Ch. 3 - At the Hard Rock Cafe, like many organizations,...Ch. 3 - At the Hard Rock Cafe, like many organizations,...Ch. 3 - At the Hard Rock Cafe, like many organizations,...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- An advertising project manager developed the network diagram shown in Figure 2.10 for a new advertising campaign. In addition, the manager gathered the time information for each activity, as shown in the accompanying table. a. Calculate the expected time and variance for each activity. b. Calculate the activity slacks and determine the critical path, using the expected activity times. c. What is the probability of completing the project within 23 weeks?arrow_forwardPart II-A. Given the activity table below, prepare its corresponding Gantt Chart and PERT diagram. Activity Predecessor Days A 1 B 4 C 2 D 1 E 1 F 5 G 3 H 3 I 1 J 2 K 1 L 3 M 2 A A C B, D E E E H G, I J J L Part II-B. Based on your illustration, please answer the following. Given the diagram above, please answer the following. 7. How many possible paths are there from the start to the end of the project? 8. Which tasks are on the critical path of the PERT chart above? 9. What is the slack time for tasks C, D and G? 10. The person working on task C tells the project manager he can't start work until one day after the scheduled starting date. What impact would this have on the completion date of the project? Why? 11. Task A will be delayed by 2 days because some equipment has arrived late. If the project manager still wants to finish the project within the original time frame, he will need to shorten the time for one or more of the tasks. What steps can he take to reduce the number of…arrow_forwardThe R&D department is planning to bid on a large project for the development of a new communication system for commercial planes. The accompanying table shows the activities, times, and sequences required. ACTIVITY IMMEDIATE PREDECESSOR TIME (WEEKS) A — 4 B A 2 C A 5 D A 5 E B 4 F C D 4 G D F 6 H D 3 I E G H 7 b. What is the critical path? Note: You may select more than one answer. check all that apply A-C-F-G-I A-B-E-I A-D-H-I A-D-F-G-I c. Suppose you want to shorten the completion time as much as possible, and you have the option of shortening any or all of B, C, D, and G each one week. Which would you shorten? Note: You may select more than one answer. check all that apply B C D G E F d-1. What is the new critical path? Note: You may select more than one answer. check all that apply A-C-F-G-I A-B-E-I A-D-H-I A-D-F-G-I d-2. What is the earliest completion time for the new critical path?arrow_forward
- Consider a project having the following ten activities: Immediate Activity A Time (weeks) Predecessors none 7 B none 3 A 5 А, В С, D 6 E 4 F D 4 G C 9 E, G E, F H, I H 8 I J 5 a)Construct AON diagram for the following data. b) Identify path, path duration and critical path c) Conduct CPM analysis by identifying ES, EF, LS, LF d) What is the slack for each activity and the critical path?arrow_forwardThe R&D department is planning to bid on a large project for the development of a new communication system for commercial planes. The accompanying table shows the activities, times, and sequences required: ACTIVITY IMMEDIATE PREDECESSOR TIME (WEEKS) A — 3 B A 2 C A 4 D A 4 E B 6 F C, D 6 G D, F 2 H D 3 I E, G, H 3 a. what is the critical path? b Suppose you want to shorten the completion time as much as possible, and you have the option of shortening any or all of B, C, D, and G each one week. Which would you shorten? c. after shortening, what would be the new critical path?arrow_forwardplease only anwer the C partarrow_forward
- A 4 D 8 Start B 5 E 3 Finish Key C 2 F 2 Activity Duration Using the network diagram above, answer each of the 5 questions below: a) What are the activities on the critical path (using the letters provided) b) What is the shortest amount of time (in days) that this project can finish c) Can activity C be delayed without impacting the end date of the project? yes or no d) If activity C can be delayed, by how many days can it be delayed before the project is delayed? e) Crashing activity B by 1 day will cost $100, should you do this? Why or why not?arrow_forwardAssume the network and data that follow: ACTIVITY NORMAL TIME (WEEKS) NORMAL COST CRASH TIME (WEEKS) CRASH COST IMMEDIATE PREDECESSORS A 2 $ 50 1 $ 70 — B 4 80 2 160 A C 8 70 4 110 A D 6 60 5 80 A E 7 100 6 130 B F 4 40 3 100 D G 5 100 4 150 C, E, F b. Indicate the critical path when normal activity times are used. multiple choice 1 A-D-E-G A-D-F-G A-C-F-G A-B-E-G c. Compute the minimum total direct cost for each project duration based on the cost associated with each activity. Consider durations of 13, 14, 15, 16, 17, and 18 weeks. Note: Leave no cells blank - be certain to enter "0" wherever required. d-1. If the indirect costs for each project duration are $400 (18 weeks), $350 (17 weeks), $300 (16 weeks), $250 (15 weeks), $200 (14 weeks), and $150 (13 weeks), what is the total project cost for each duration? d-2. Indicate the minimum total project cost duration. multiple choice 2 14 or 15 weeks 16 or 15 weeks 13 weeks 17…arrow_forwardIMMEDIATE TIME IMMEDIATE ACTIVITY PREDECESSOR(S) (WEEKS) ACTIVITY PREDECESSORIS) 14 E CE a D C D H F.O 900 a) Choose the correct network to represent this ston OA b) Which activities are on the critical pay? The critical pathis What is the length of the critical parth? The length of the critical path is weeks (Enter your response as a whole number) OB 3 4 TIME (WECKS) OCarrow_forward
- To complete the problem the following is necessary. 1) project network diagram (AON), 2) table that shows ES, EF, LS, LF, and Slack for each activity, 3) How long will the project take to be completed?, 4) Which activities are critical? Immediate Time Activity Predecessors (weeks) A none 8 B A 2 C A 3 D A 60 E B 60 F C 2 G D 2 H…arrow_forwardSlack guns for each of the activitiesarrow_forwardQ1: Draw the arrow diagram for the following activities and show the critical path: activity duration Pervious Follow A B,C B 4 A D,E 7 F,G D E 4 B H,I F 8 H,I G K,J D,E,F K I 4 E,F K,J J 4 G,I M,N K G,H,I L 2 4 J 6 L,M P CS Scanned with CamScannerarrow_forward
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