Concept explainers
(a)
Interpretation: Estimate of the process average.
Concept introduction:This can explore where the production data express a usual distribution the procedure can be defined by the process mean.
(b)
Interpretation: Estimate of the average range.
(c)
Interpretation: Construct an R-chart and
Concept introduction:X bar charts are a type of statistical process control chart which measures a central a shift in the central tendency of the process. In other words, X- bar charts monitor the mean or average of product characteristics. The central line of the X-bar chart is the average of the samples and limits.
R-chart or range-chart is also a type of statistical process control chart, but it monitors the range of dispersion or variability of process. The central line of the r- chart is the average range and limits
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
Operations Management: Processes And Supply Chains (12th Global Edition) - Does Not Include Mylab Operations Management
- Operaion management No excel screen shot pleasearrow_forwardManagement of Mittel Rhein AG of Köln, Germany, would like to reduce the amount of time between when a customer places an order and when the order is shipped. For the first quarter of operations during the current year the following data were reported: Inspection time- 0.7 daysWait time (from order to start of production) -16.6 daysProcess time -2.7 daysMove time -1.3 daysQueue time- 4.5 daysRequired:1. Compute the throughput time. (Round your answer to 1 decimal place.) 2. Compute the manufacturing cycle efficiency (MCE) for the quarter. (Round your answer to the nearest whole percentage (i.e., 0.12 should be entered as 12).) 3. What percentage of the throughput time was spent in non–value-added activities? (Round your answer to the nearest whole percentage (i.e., 0.12 should be entered as 12).) 4. Compute the delivery cycle time. (Round your intermediate calculations and final answer to 1 decimal place.) 5. If by using Lean Production all queue…arrow_forwardSix Sigma Analytical Tools include all of the following except Checksheet Flowchart Outcome diagram Run Chart Process Control Chartarrow_forward
- How does process improvement contribute to optimizing quality assurance outcomes?arrow_forwardPlease confirm if I have answer these questions correctly and provide rationale if not the case. Thank you very much!arrow_forwardces Inter-State Moving and Storage Company wishes to establish a control chart to monitor the proportion of residential moves that result in written complaints due to late delivery, lost items, or damaged items. A sample of 50 moves is selected for each of the last 12 months. The number of written complaints in each sample is 8, 7, 4, 8, 2, 7, 11, 6, 7, 6, 8, and 12. Click here for the Excel Data File a. Insert the mean proportion defective, UCL, and LCL (Leave no cells blank - be certain to enter "0" wherever required. Round your intermediate calculations and final answers to 2 decimal places.) Mean proportion defective UCL LCL c. Does it appear that the number of complaints is out of control for any of the months? Yes ONOarrow_forward
- What two basic assumptions must be satisfied in order to use a process capability index?arrow_forwardPlease do not give solution in image format thanku A regional airline is concerned about its on-time performance. The Memphis hub experiences 20 flight operations each day of the week, with the following record of on-time departures for the previous 10 days: 17, 16, 18, 19, 16, 15, 20, 17, 18, and 16. Prepare a p-chart with a sample size consisting of one week’s average on-time percentage. What is UCL and LCL?arrow_forwardDescribe a way that Waste Management could go about obtaining a simple random sample of its customers.arrow_forward
- Explain process capability and compute C p and C pkarrow_forwardProcess capability. Determine which of these three processes are capable:Process Mean StandardDeviationLowerSpecUpperSpec1 7.5 .10 7.0 8.02 4.6 .12 4.3 4.93 6.0 .14 5.5 6.7arrow_forwardIn response to intensive foreign competition, the management of Florex Company has attempted over the past year to improve the quality of its products. A statistical process control system has been installed and other steps have been taken to decrease the amount of warranty and other field costs, which have been trending upward over the past several years. Costs relating to quality and quality control over the last two years are given below: Costs (in thousands) Last Year This Year Inspection $ 720 $ 909 Quality engineering $ 450 $ 765 Depreciation of test equipment $ 675 $ 270 Rework labor $ 1,080 $ 1,530 Statistical process control $ 0 $ 225 Cost of field servicing $ 1,350 $ 1,260 Supplies used in testing $ 45 $ 81 Systems development $ 720 $ 900 Warranty repairs $ 3,780 $ 1,620 Net cost of scrap $ 630 $ 1,170 Product testing $ 900 $ 1,800 Product recalls $ 3,150 $ 900 Disposal of defective products $ 810 $ 1,080 Sales have been flat over the…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.