Operations Management
11th Edition
ISBN: 9780132921145
Author: Jay Heizer
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 10DQ
Describe how expected activity times and variances can be computed in a PERT network.
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Describe how expected acti vity times and variances can be computed in a PERT network.
Describe how expected activity times and variances can be computed in a PERT network.
b) – Draw the Activity-on-Node (AON) diagram using the following representation for every node:
Activity
Description
Expected
Time
ES
EF
LS
LF
Slack
C.) Complete the following table, determine the expected time of completion assuming that the project starts at week 0 (zero) and
identify the critical path for this project. Demonstrate all your calculations.
On Critical
Path?
Activity
Activity Description
ES
EF
LS
LF
Slack
Yes or No
Locate new facilities
2
Order furniture
Interview prospective staff
Hire and train staff
3
4.
Remodel facilities
Receive and set up furniture
Move in and start up
6
7
a) Complete the following table, calculate the project variance and project standard deviation. Demonstrate all your
calculations.
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
- Q1: Given the information below, draw the network (AOA) and find the probability of finishing the job in (40) weeks? Solve using PERT. Activity notation Weeks 1-2 2-3 2-4 2-5 3-6 4-7| 5-7 6-8 7-8 8-9 2,7,8 5,6,9 3,7,8 4,5,6 6,9,10 6,8,11 4,6,7 5,7,10 4,8,9 4,7,9 [50%]arrow_forwardOPERATIONS Duration and requirement of workforce for each activity is tabulated below for a network Activity Duration Number of men 1-2 3 5 2-4 2 3 2-3 3 7 3-4 0 0 3-5 3 2 4-5 7 2 3-6 2 1 5-6 6 6 4-6 5 5 Use either PERT or CPM to (i) Draw the network and comment on the scheduling of activities to smoothen the development of the workforce (ii) Re-schedule the activities for smooth development (iii) Find the project schedule if only 4 men are availablearrow_forwardDraw the PDM network diagram for the following project, calculate the earliest and latest starting and finishing times for all activities, and hence calculate the total float, free float for each activity. Activity IPA Duration (WEEKS) WORKERS REQUIRED PER WEEK EQUIPMENT REQUIRED (hrs/WEEK) H ---- 10 5 8 I H 8 4 2 J H 6 8 6 K J 4 2 1 L J 2 6 2 M J 4 3 2 N I 4 2 0 O I 5 5 0 P I, J 5 6 6 Q L 5 2 0 R M 5 0 4 S N 3 0 4 T Q 3 0 0 U O, S 1 9 8 V K, R 5 14 8 W U 2 6 8 X V 3 6 8 Y P,W,X,T 8 14 8 Z Y 6 5 8 If there is a limit of 15 workers per week, smooth the workers loading using ES and LS histogram. Based on the proposed scheduling, plot the equipment loading histogram for the project. Independently of the above resource leveling, schedule the…arrow_forward
- 3. PERT NETWORK. Required a-barrow_forwardThe following information is given for a CPM network: Activity Predecessor Successor Normal Time Normal Cost Crash Time Crash Cost A --- B, C 5 $ 60 2 $ 125 B A D, C 4 70 2 90 C A, B D 6 80 3 150 D B, C --- 3 40 1 60 What is the critical path of the network?arrow_forwardConsider the following data for a project to install a new server at the Northland Pines High School: NEED HELP Carrow_forward
- Operation management No hand written solution pleasearrow_forwardUsing AOA, diagram the network describedbelow for Lillian Fok’s construction project. Calculate itscritical path. How long is the minimum duration of thisnetwork?arrow_forwardHello, Pls help with steps and answers. Thank you!arrow_forward
- Draw the Network Diagram, determine the critical path and draw Gantt chart for project scheduling for the following two problems Problem1. Activity Predeccsor Duration(hours) Lag Time(hours) A - 2 0 B A 4 5 C B 3 3 D B 5 0 E D, C 2 0 Problem 2. Activity Predeccsor Duration(months) A - 2 B A 1 C A 3 D B, C 1 E D 2 F D…arrow_forwardPlease explain how to solve this chart in terms of engineering project managment How can I draw the network diagrams?How can I list the network paths?How can I determine the critical paths? How can I determine the float for each activity?arrow_forwardNikos Anastopoulos of EMPROSS Strategic IT Consultants, leads the development of a new football stadium. He developed the activities, durations, and predecessor relationships in the following table for delivering company valuations. Activity Predecessor Duration in Weeks A - 5 B - 3 C A, B 8 D C 3 E - 4 F E 10 G F 8 H E 18 I D 20 J D, G, I 7 K I 5 L H 10 6A. Draw the Network Diagram, and identify and discuss the project duration and the critical path using the following activity notation: the first pic: First: Draw the precedence diagram. Second: Using the notation given identify the duration of the project: you can type it. Third: identify the critical part and explain the critical path. Fourth: Explain your answer. This can be done by describing the process and the observations done once the answer has been found. 6B. Draw the project’s Gantt chart First: The…arrow_forward
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