OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
7th Edition
ISBN: 9780077835439
Author: Roger G Schroeder, M. Johnny Rungtusanatham, Susan Meyer Goldstein
Publisher: McGraw-Hill Education
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Question
Chapter 9, Problem 5P
a)
Summary Introduction
To explain: How to use p chart to explain if there is a difference between the two shifts.
b)
Summary Introduction
To determine: The center line and the UCL and LCL for the first shift.
c)
Summary Introduction
To explain: If the process means have moved downwards or upwards.
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A green belt is going to monitor the process by collecting more than 10 samples per group. Which of the following control charts would be most appropriate ?
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Chapter 9 Solutions
OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
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- Which tool is very useful in documenting and presenting the whole process Select one a control chart b. check sheet O c flow chart O d. Pareto chart e histogramarrow_forwardplease answer all parts within 30 minutes.arrow_forwardThe Digital Guardian Company issues policies that protect clients from downtime costs due to computer system failures. It is very important to process the policies quickly because long cycle times not only put the client at risk, they could also lose business for Digital Guardian. Management is concerned that customer service is degrading because of long cycle times, measured in days. The table contains the data from five samples, each sample consisting of eight random observations. E Click the icon to view the table with sample data. Click the icon to view the table of factors for calculating three-sigma limits for the x-chart and R-chart. a. What is your estimate of the process average? The estimate of the process average is 10.43. (Enter your response rounded to two decimal places.) b. What is your estimate of the average range? The estimate of the average range is . (Enter your response rounded to two decimal places.)arrow_forward
- 5arrow_forwardPDSA cycle is also known as: a. Ishikawa tool b. Control chart c. Histogram d. Deming cycle e. Parteto analysisarrow_forward(1) Sample size is the number of samples you collected in quality management. A v A True B False (2) If an individual observation is above the UCL or below the LCL for the mean chart, the mean chart is out of control. A A True B False (3) A process is in control if BOTH the mean chart and the p chart are in control. A True B False (4) In "Slack Time Remaining (STR)" approach, the slack time remaining = Processing Time - Due Date. B v A True B. Falsearrow_forward
- Design a process control system using control charts.arrow_forwardA process that is assumed to be in control with limits of 91 ± 2 had sample averages for the X-bar chart of the following: 87.1.87, 87.2,89,90, 88.5, 89.5, and 88. Which of the following statement below are correct? a. None is correct Ob. Process mean is in-control O C. Process mean is not in-control O d. Not enough information to determine NEXT PAGE PAGEarrow_forwardFACTORS FOR R CHARTS Number of Factor for Observations in Subgroup, x Chart, A2 Lower Control Limit, Upper Control Limit, D3 Da 1.88 3.27 1.02 2.57 0.73 0.58 2.28 4 2.11 5 0.48 2.00 0.42 0.08 1.92 0.37 0.14 1.86 8 0.34 0.18 1.82 0.31 0.22 1.78 10 0.29 0.26 1.74 11 0.27 0.28 1.72 12 0.31 1.69 0.25 13 0.24 0.33 1.67 14 0.22 0.35 1.65 15 0.36 1.64 0.21 16 0.38 1.62 17 0.20 0.39 1.61 18 0.19 0.40 1.60 19 0.19 0.41 1.59 20 0.18 23 67arrow_forward
- A process that is assumed to be in control with limits of 91 +2 had sample averages for the X-bar chart of the following: 87.1, 87, 87.2, 89, 90, 88.5, 89.5, and 88. Which of the following statement below are correct? O a. Process mean is not in-control O b. None is correct O c. Process mean is in-control O d. Not enough information to determinearrow_forwardWhat determines the width of the control limits in a process chart?arrow_forwardIn an existing process, we have found that the lower control limit for X-bar chart is 8.08. Whereas, the lower and upper control limits for R-chart are 0 to 2.25 respectively. The following measurements for one sample are taken: 8.5, 8.9, 8.28, and 8.7. Using both the X-bar chart and R- chart for this particular sample, what we can conclude about the overall process a. Insufficient information to conclude b. Process is in-control C. Perfect process d. Process is out-of-control.arrow_forward
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