Concept explainers
Rich Cole Control Devices, Inc., produces custombuilt relay devices for auto makers. The most recent project undertaken by Cole requires 14 different activities. Cole’s managers would like to determine the total project completion time (in days) and those activities that the along the critical path. The appropriate data are shown in the following table.
a) What is the probability of being done in 53 days?
b) What date results in a 99% probability of completion?
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
Additional Business Textbook Solutions
OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
Principles Of Operations Management
Operations Management: Sustainability and Supply Chain Management (12th Edition)
Loose-leaf for Operations Management (The Mcgraw-hill Series in Operations and Decision Sciences)
Operations Management
Business in Action
- The following represents a project that should be scheduled using CPM: ACTIVITY A B C D E F G H IMMEDIATE PREDECESSORS A A B C, D D, E F,G b. What is the critical path? ⒸA-D-G-H OB-E-G-H ⒸA-C-F-H A-D-F-H Probability TIMES (DAYS) b Project completion time a 1 1 2 1 1 3 1 2 m 2 2 2 8 2 4 3 3 6 9 11 9 3 c. What is the expected project completion time? Note: Do not round intermediate calculations. Round your answer to 3 decimal places. 11 11 11 X Answer is not complete. days d. What is the probability of completing this project within 19 days? Note: Use Excel's NORM.S.DIST function to find the correct probability for your computed Z value. Do not round intermediate calculations. Round Z value to 2 decimal places and final answer to 4 decimal places.arrow_forwardAnswer the following homework questionarrow_forwardEarned value analysis is the project management tool that is used to measure project progress. You are a project manager in company XYZ that responsible to handling the packaging machine project with the total cost budgeting is RM100,000. There are including RM24,000 (Design), RM60,000 (build) and RM16,000 (install & test). The information regarding on the project progress development in weeks 8 as shown in Table 2 below: No Type Cumulative Budgeted Cost (CBC) 2 Cumulative Actual Cost (CAC) Cumulative Earned Value (CEV) 1 3 TOTAL RM i. ii. iii. iv. 64,000 68,000 54,000 100,000 Percentage 64.0 Cost performance Index (CPI) [hint: CEV/CAC] Cost variance (VC) [hint: CEV-CAC] 68.0 54.0 a) Based on question 2(a), calculate and elaborate the various of indicators of cost performance for this project based on the respective below: 100.0 Forecasted cost of completion (FCAC) with action taken [hint: TBC/CPI] Forecasted cost of completion (FCAC) without any action taken [hint: CAC + [TBC-CEV]arrow_forward
- Consider the office renovation project data in Table 7.16. A“zero” time estimate means that the activity could take a verysmall amount of time and should be treated as a numericzero in the analysis.a. Based on the critical path, find the probability ofcompleting the office renovation project by 39 days.b. Find the date by which you would be 90 percent sure ofcompleting the project.arrow_forwardColeman Rich Control Devices, I nc., producescustom-built relay devices for auto makers. The most recent projectundertaken by Rich requires 14 different activities. Rich's managerswould like to determine the total project completion time(in days) and those activities that lie along the critical path. Theappropriate data are shown in the following table.a) What is the probability of being done in 53 days?b) What date results in a 99% probability of completion?arrow_forwardBy using Bar chart planning method, find the following: - Total duration for the project activities shown below - The project completion date (assume the start date is 1/3/2012 Activity A CDEFGHI J Duration 85 2846 7 45 6 (days) Following Activity C,D EFGHIJJ * If the project shown above had a delay of (4 days after (13working days), what would its new delivery date be? B Barrow_forward
- Given unlimited availability of resources: Evaluate the officer’s chance to catch the robbers if she arrives 42.3 minutes after the robbery begins. [Calculate the probability for the critical path only]arrow_forward8 EARNED VALUE ANALYSIS The following project is reported to be at the end of its 8 week. Find the cost and schedule variances. Also find the CPI, SPI, CSI, ETC and EAC for the project. Find the condition of the project at the this reporting period. PV AC Budget ($) Duration Actual Cost % D-8 Activity Predecessor (s) (week) ($) Complete 300 400 A 3 100 A3 В 4 200 180 100 B:4 C 7 250 300 90 A 8 600 400 50 400 200 В 40 150 180 F В 4 100 G C 4 100 200 40 500 H D, E 2 300 F, G 3 J H, I 1 100 ㅇ CO 프 (-)arrow_forwardGiven is a Project with network diagram and activity times as shown below. Activity Time (wks) A 13 B 5 Start с 14 A c) The Slack time of Activity C = Blank 3 weeks D D a) The Earliest Start (ES) time of Activity I = Blank 1 weeks 9 b) The Latest Start (LS) time of Activity B = Blank 2 weeks f) The Project Completion time = Blank 6 weeks d) The Earliest Finish (EF) time of Activity H = Blank 4 weeks e) The Latest Finish (LF) time of Activity B = Blank 5 weeks B F E 12 E F LL 17 H G 9 J H 15 - 15 J 2arrow_forward
- 11. Using PERT, Adam Munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 24 months, and the project variance is 4. Part 2 a) The probability that the project will be completed in 20 months = ______ (round your response to four decimal places)arrow_forwardIn reference to the attached image and data below: What are the final recommendations? Step A we know: Critical Path = A, B, H, I, J; Project Time = 40 Weeks; Total Cost = 364,000 Step B we know: To crash the critical path I would crash A by 1 week, B by 2 week, H by 2 week and C by 3 week. This would not alter the critical path, only the time line. Steps C we know: Modeling uncertainty in activity times. In this case I would use the activity times and determine the Variances and the Standard Deviation. Using “best case” (x) and “worst case” (y) scenarios for activity times the formula’s would be (x-y)/6 and (x-y)^2/36.arrow_forwardActivities, 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_forward
- Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,Operations ManagementOperations ManagementISBN:9781259667473Author:William J StevensonPublisher:McGraw-Hill EducationOperations and Supply Chain Management (Mcgraw-hi...Operations ManagementISBN:9781259666100Author:F. Robert Jacobs, Richard B ChasePublisher:McGraw-Hill Education
- Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage LearningProduction and Operations Analysis, Seventh Editi...Operations ManagementISBN:9781478623069Author:Steven Nahmias, Tava Lennon OlsenPublisher:Waveland Press, Inc.