Concept explainers
a)
To determine: The purpose of an
Introduction:
Control chart:
It is a graph used to analyze the process change over a time period. A control chart has a upper control limit, and lower control which are used plot the time order.
b)
To determine: The purpose of a range control chart.
Introduction:
Control chart:
It is a graph used to analyze the process change over a time period. A control chart has a upper control limit, and lower control which are used plot the time order.
c)
To determine: The purpose of p chart.
Introduction:
Control chart:
It is a graph used to analyze the process change over a time period. A control chart has a upper control limit, and lower control which are used plot the time order.
d)
To determine: The purpose of a c chart.
Introduction:
Control chart:
It is a graph used to analyze the process change over a time period. A control chart has a upper control limit, and lower control which are used plot the time order.
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Chapter 10 Solutions
OPERATIONS MANAGEMENT (LL) W/CONNECT
- 11. Jars of pickles are sampled and weighed. Sample measures are plotted on control charts. The ideal weight should be precisely 11 oz. Which type of chart(s) would you recommend to monitor the process? Select one: a. p-chart b. c-chart c. both x-bar chart and R-chart d. x-bar chart, but not R-chart e. R-chart, but not x-bar chartarrow_forwardMention two types of control charts. What are the characteristics of control charts?arrow_forwardp-chart and c-chart. Using the appropriate control chart, determine two-sigma control limits for each Problem 4 case:a. An inspector found an average of 3.9 scratches in the exterior paint of each of the automobilesbeing prepared for shipment to dealers.b. Before shipping lawn mowers to dealers, an inspector attempts to start each mower and notes anythat do not start on the first try. The lot size is 100 mowers, and an average of 4 did not start (4percent).arrow_forward
- Briefly explain the purpose of each of these control charts:a. x-barb. Rangec. p-chartd. c-chartarrow_forward1. A hospital is monitoring the surgeries that result in surgical complications. The number of surgeries each month and those resulting in a complication were recorded. The number of surgeries each month and those resulting in a complication were recorded. The number of surgeries each month can vary. Which of the following control charts is most appropriate to monitor this process? a. c-chart b. xbar and R chart c. p-chart d. np-chart 2. A factory collected data on the number of nonconforming parts and constructed a p-chart. 15 samples of size 150 were collected. They determined that the average fraction of non-conforming parts was pbar=0.037. During production, a sample of 150 parts was taken, of which 11 were non-conforming. At the time this sample was taken: a. the lower control limit was -0.01 b. the sample was outside the control limits c. the sample was within the control limits d. the upper control limit was 0.073 3. What is the upper control limit for a…arrow_forwardCan you please explain the steps to create the control chart ?arrow_forward
- When is the desired mean, J.L, used in establishing the centerlineof a control chart instead of X?arrow_forwardExplain how to contruct process control chart and use them to determine whether a process is out of statistical control.arrow_forwardExplain how to construct process control chart and use them to determine whether a process is out of statistical control?arrow_forward
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