Operations Management
11th Edition
ISBN: 9780132921145
Author: Jay Heizer
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 11DQ
Define earliest start, earliest Finish, latest Finish, and latest start times.
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Define earliest start, earliest finish, latest finish , and lateststart times.
what equation did you use? to get the earliest start time and latest start time and slack
Calculate the ES, EF, LS, and LF times and the slack for each activity in the figure below, and identify
the critical path for the project. Can the project be completed in 30 weeks? Assume that "Systems
Analysis" actually finished at 8 weeks, "Design Input & Output" actually finished at 15 weeks, and
"Design Database" actually finished at 19 weeks. Recalculate the expected project completion time.
Which activities would you focus on to get the project back on schedule?
Problem
Definition
1
System
Analysis
Design
Input &
Output
Design
Database
4
15
Develop
Input
Screens
Develop
Output
Reports
6
8
10
Develop
Database
8
Test
System
Implement
System
6 9
5
+
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
- What is the formula for calculating number of possible schedules ?arrow_forwardWhat is Determining slack (or Float) Explain briefly with examplesarrow_forwardDesign a Gantt chart using the following data. TASK ASSIGN TO START END DURATION STATUS Ferry Maintenance Maria 01/01/2023 08/01/2023 7 Completed Crew Scheduling Maria 08/01/2023 15/01/2023 7 Completed Passenger & Cargo Handling Maria 15/01/2023 22/01/2023 7 Completed Route Planning Kerry Ann 22/01/2023 04/02/2023 13 Completed Safety & Emergency Planning Kerry Ann 02/02/2023 11/02/2023 9 Completed Ticketing & Payment Kerry Ann 11/02/2023 18/02/2023 7 Completed Marketing & Website Design Shenae 18/02/2023 25/02/2023 7 Completed Advertising Shenae 25/02/2023 04/03/2023 7 Completed Testing Jenerlee 04/03/2023 11/03/2023 7 Completed Implementation Jenerlee 11/03/2023 26/03/2023 15 Completedarrow_forward
- How is slack/float calculated? Latest finish date – duration Latest start date – earliest start date Earliest start date + duration earliest start date - Latest start datearrow_forwardDesign a Gantt chart using the following data, removing blank spaces on the chart. TASK ASSIGN TO START END DURATION STATUS Ferry Maintenance Maria 01/01/2023 08/01/2023 7 Completed Crew Scheduling Maria 08/01/2023 15/01/2023 7 Completed Passenger & Cargo Handling Maria 15/01/2023 22/01/2023 7 Completed Route Planning Kerry Ann 22/01/2023 04/02/2023 13 Completed Safety & Emergency Planning Kerry Ann 02/02/2023 11/02/2023 9 Completed Ticketing & Payment Kerry Ann 11/02/2023 18/02/2023 7 Completed Marketing & Website Design Shenae 18/02/2023 25/02/2023 7 Completed Advertising Shenae 25/02/2023 04/03/2023 7 Completed Testing Jenerlee 04/03/2023 11/03/2023 7 Completed Implementation Jenerlee 11/03/2023 26/03/2023 15 Completedarrow_forwardDefine advanced planning and scheduling (APS)arrow_forward
- Question 1 The longest time period you can go without updating a schedule is no more than 3 weeks. True False Question 2 0 Network Loop is the process by which relationships between activities are created. Activities are linked finish-to-start start-to-start, finish -to -finish, or start-to-finish and can include lag or lead times. True False Question 3 A constraint is a restriction imposed on the start date, finish date or other aspect of an activity. Constraints are used to prescribe limitations on the schedule based on external conditions such as contractual restrictions or imposed float requirements. True Falsearrow_forwardPreceding Activity Crashed Cost per week $600 $700 $400 Activity Normal Completion Time (week) Crashed Completion time (week) A 7 5 B 12 10 A 8 2 $800 $300 $500 E C, D 5 4 F E 9 8 D. F 10 10 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. Showing the earliest start time, the earliest finish time, the latest start time and the latest finish time of each of the activities in the project determine the completion time of the project and the critical path. ii. Find the slack time (delay time) of each of the activities, the critical and the non-critical activities. Find the minimum possible completion time of the project by considering the crashed completion times and the minimal total cost of that crashing the project. iv. Need proper handwritten answers. Thank you!arrow_forwardExplain Forward scheduling?arrow_forward
- What's the most common mistake people make when calculating start and finish times? Give a specific example.arrow_forwardSingle time estimate vs. Three-time estimatearrow_forwardClarify schedule responsibilities of the controller, management, and teams for the project of manufacture of the electric busarrow_forward
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