Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Chapter 17, Problem 5P
For each of the problems listed, determine the following quantities for each activity: the earliest start time, latest start time, earliest finish time, latest finish time, and slack time. List the critical activities, and determine the expected duration of the project.
a. Problem 1a.
b. Problem 1b.
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Part 1:
Building a backyard swimming pool consists of nine major activities. The activities and their immediate predecessors are shown. Develop the project network.
Part 2:
Assume that the activity time estimates (in days) for the swimming pool construction project in Part 1 are as follows:
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Chapter 17 Solutions
Operations Management
Ch. 17 - A project manager may need two skill setsthose of...Ch. 17 - Explain the term project champion and list some...Ch. 17 - List the steps in risk management.Ch. 17 - Give some examples of ethical issues that may...Ch. 17 - What are the key advantages of using project...Ch. 17 - What is a work breakdown structure, and how is it...Ch. 17 - Identify the term being described for each of the...Ch. 17 - List the main advantages of PERT. List the main...Ch. 17 - Why might a probabilistic estimate of a projects...Ch. 17 - Define each of these terms, and indicate how each...
Ch. 17 - Why might a person wish to be involved with a...Ch. 17 - Prob. 12DRQCh. 17 - What are some aspects of the project managers job...Ch. 17 - What is the main benefit of a project organization...Ch. 17 - What trade-offs are associated with time and cost...Ch. 17 - Who needs to be involved in assessing the cost of...Ch. 17 - Prob. 3TSCh. 17 - Project management techniques have been used...Ch. 17 - Give three examples of unethical conduct involving...Ch. 17 - For each of the following network diagrams,...Ch. 17 - Chris received new word processing software for...Ch. 17 - Prepare a Gantt chart for each of the following in...Ch. 17 - a. Develop a list of activities and their...Ch. 17 - For each of the problems listed, determine the...Ch. 17 - PRINTED BY: 92248ddb24ccbc6@placeholder.10274.edu....Ch. 17 - Three recent college graduates have formed a...Ch. 17 - The new director of special events at a large...Ch. 17 - PRINTED BY: 92248ddb24ccbc6@placeholder.10274.edu....Ch. 17 - The project described in the following table is...Ch. 17 - The following precedence diagram reflects three...Ch. 17 - A project manager has compiled a list of major...Ch. 17 - Here is a list of activity times for a project as...Ch. 17 - The project manager of a task force planning the...Ch. 17 - PRINTED BY: 92248ddb24ccbc6@placeholder.10274.edu....Ch. 17 - Chucks Custom Boats (CCB) builds luxury yachts to...Ch. 17 - Prob. 17PCh. 17 - Create a risk matrix in the style of Figure 17.13...Ch. 17 - Create a risk matrix for this project: Explain...Ch. 17 - CASE: The Case of the Mexican crazy quilt 1. The...Ch. 17 - CASE: The Case of the Mexican crazy quilt 2. The...Ch. 17 - CASE: The Case of the Mexican crazy quilt 3. The...Ch. 17 - CASE: The Case of the Mexican crazy quilt 4. The...Ch. 17 - CASE: The Case of the Mexican crazy quilt 5. The...Ch. 17 - B. Smitty Smith is a project manager for a large...
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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
- Activities, preceding activities, normal and crashed completion times of each of the activities and crashed costs of activities per week of a project are given in the following table. Activity Preceding Activity Normal Crashed Completion time (week) Crashed Cost Completion Time (week) 7 per week A 7 B $500 C 4 3 $700 $600 A A, C В, D D, E D 7 E F 10 9. $800 9 8 $400 i. Draw the network diagram linking all the activities in a way that it shows if there exist any preceding activity/activities before starting each of the mentioned activities in the above table. ii. Find the earliest start time, the earliest finish time, the latest start time and the latest finish time of each of the activities in the drawn diagram of the project and hence the completion time of the project and the critical path.arrow_forwardThe fo llowing is a table of activities associated with a project at Rafay lshfaq's software firm in Chicago, their durations, and what activities each must precede: a) Draw an AOA diagram of the project, including activity durations.b) Define the critical path, listing all critical activities in chronological order.c) What is the project completion time (in weeks)?d) What is the slack (in weeks) associated with any and all noncritical paths through the project?arrow_forwardSuppose that the project team has arrived at the following time estimates for activity B (Select site and survey) of the St. John’s Hospital project: a = 7 weeks, m = 8 weeks, and b = 15 weeks a. Calculate the expected time and variance for activity B. b. Calculate the expected time and variance for the other activities in the project.arrow_forward
- Consider the project described in the table below: Activity Duration A B C D E F G H 9 4 8 8 5 7 4 6 OEST-9 and LCT = 15 OEST=9 and LCT = 13 Immediate Predecessor What is the earliest start time (EST) and latest completion time (LCT) of activity B? OEST=9 and LCT = 20 OEST-9 and LCT-17 - A A A B B,C C,D E,F,Garrow_forwardDave Fletcher 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 total project completion time and the critical path should also be determined. Here are the activity times: O Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s) E F A B C D Dave's earliest start (ES) and earliest finish (EF) are: 5 8 00 2 2 Activity HOT G ES Н EF 5 5 5 10 7 B B C, E D.Farrow_forwardDave Fletcher 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 total project completion time and the critical path should also be determined. Here are the activity times: Time Immediate Time Immediate Activity (weeks) Predecessor(s) Activity (weeks) Predecessor(s) A 7 E B 7 3 A G 9 C, E 1 A H 8 D, F Dave's earliest start (ES) and earliest finish (EF) are: Activity ES EF A 7arrow_forward
- Dave Fletcher 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 total project completion time and the critical path should also be determined. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s) A E B F с G D H Dave's earliest start (ES) and earliest finish (EF) are: 6 7 3 2 A A Activity A ES EF 6 4 6 10 7 B B C, E D, Farrow_forwardDave Fletcher 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 total project completion time and the critical path should also be determined. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s)A 7 - E 4 BB 8 - F 7 BC 4 A G 11 C, ED 1 A H 6 D , F Dave's earliest start (ES) and earliest finish (EF) are: Activity ES EF A 0 7 B 0 8 C 7 11 D 7 88 E 8 12 Part 7 F ? ? G ? ? H ? ?arrow_forwardA project has the activity duration and cost information indicated in the table where all times are in weeks. What is the total cost for completing this project in 50 days? Activity Predecessor Normal Time Normal Cost Crash Time Crash Cost A -- 8 $12,000 5 $21,000 B A 12 $20,000 9 $30,000 C A 15 $24,000 10 $60,000 D B 3 $10,000 2 $15,000 E C 9 $17,000 6 $34,000 F E 7 $5,000 6 $6,000 G D 8 $14,000 6 $20,000 H A 12 $22,000 10 $30,000 I H 6 $50,000 5 $55,000 J F, G, I 11 $33,000 9 $50,000arrow_forward
- Consider a project that has been modeled as in the table below. Part a) Draw the PERT/CPM network for this project and determine the project’s expected completion time μP and its critical path. Part b) Suppose the standard deviations of the activity durations are σA = 2, σB = 1, σC = 0, σD = 2, σE = 3, and σF = 0. Then please estimate the standard deviation of the overall project’s standard deviation σP . Part c) Suppose for the standard Normal random variable Z, we know P[−1 ≤ Z ≤ +1] ' 68%, P[−2 ≤ Z ≤ +2] ' 95%, and P[−3 ≤ Z ≤ +3] ' 99.7%. Then, approximately what time T is one for which there is only a less than 2.5% chance for the completion time to beat (be shorter than)? *Please answer a-c and type your work and answers or write them neatly please* Thank youarrow_forwardDave Fletcher 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 total project completion time and the critical path should also be determined. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s)A 6 - E 5 BB 8 - F 6 BC 2 A G 9 C, ED 3 A H 7 D , F Dave's earilest start (ES) and earliest finish (EF) are: Activity ES EF A 0 6 B 0 ? C D E F G Harrow_forwardConsider a project that has been modeled as in the table below. Part a) Draw the PERT/CPM network for this project and determine the project’s expected completion time μP and its critical path. Part b) Suppose the standard deviations of the activity durations are σA = 2, σB = 1, σC = 0, σD = 2, σE = 3, and σF = 0. Then please estimate the standard deviation of the overall project’s standard deviation σP . Part c) Suppose for the standard Normal random variable Z, we know P[−1 ≤ Z ≤ +1] ' 68%, P[−2 ≤ Z ≤ +2] ' 95%, and P[−3 ≤ Z ≤ +3] ' 99.7%. Then, approximately what time T is one for which there is only a less than 2.5% chance for the completion time to beat (be shorter than)? *Please answer a-c and either type your work and answers or write them neatly showing each step, please* NO EXCEL Thank you!arrow_forward
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