The McGranger Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen samples of five completed mortgage transactions each were taken during a periodwhen the process was believed to be in control. The times to complete the transactions were measured.The McGranger Mortgage Company made some changes to the process and undertook a process capability study. The following data were obtained for 15 samples of size 5. Based on theindividual observations, management estimated the process standard deviation to be 3.42 (days) for use in the process capability analysis. The lower and upper specification limits (in days) for themortgage process times were 9 and 25.View an example1 214141114Get more help.3105SampleMeanRangea. Calculate the process capability index and the process capability ratio values.The process capability index Cpk =. (Enter your response rounded to three decimal places.)4 5181512116149MacBook Pro7 81918916915151011162012 6G+D12 13 14 1517111611 1213117Clear allCheck answerO

To measure the ability of a process that whether it is able to meet the specifications targets or…

Answered: The McGranger Mortgage Company is…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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The specification limits for a product are 9.9 cm and 12.35 cm. A process that produces the product has a mean of 11.18 cm and a standard deviation of 0.52 cm. What is the process capability, Cpk? a. 0.8205 b. 1.571 c. 0.7853 d. 0.75
Explain the concept of the control chart and identify out-of-control signals on a control chart. Within your answer, explain what you would do if you were a Quality Manager making your rounds throughout the plant and found a control chart that indicated an out-of-control situation.
13. A process is monitored using an X chart with UCL = 13.8 and LCL = 8.2. The process standard deviation is estimated to be 6.6. If the X chart is based on three-sigma limits, a. What is the estimate of the process mean? b. What is the size of each of the sampling subgroups?
please answer within 30 minutes.
The 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. 9 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 (Enter your response rounded to two decimal places.)
Control limits for anx−Chart have been determined as: UCLx= 56.4 and LCLx= 53.2 Sample averages for the most recent five samples, in sequential order, are 53.7, 53.8,54.7, 55.4, and 56.3. What should be concluded about the process average? Shouldsome action be taken? Why or why not?
Twenty samples of 100 items each were inspected when a process was considered to be operating satisfactorily. In the 20 samples, a total of 140 items were found to be defective. (a) What is an estimate of the proportion defective when the process is in control? (b) What is the standard error of the proportion if samples of size 100 will be used for statistical process control? (Round your answer to four decimal places.) (c) Compute the upper and lower control limits for the control chart. (Round your answers to four decimal places.) UCL = LCL =
Consider a process with lower process control limit as 1.338 and upper process control limit as 1.342 . The lower specification limit is 1.335 and the upper specification limit is 1.345. Utilizing the information provided, is the process is capable of meeting design specifications?
30 The upper and lower limits for diving ring diameters made by John's Swimming Co. are 40 and 39 cm., respectively. John took 11 samples with the following average diameters (39, 39.1, 39.2, 39.3, 39.4, 39.5 39.6, 39.7, 39.8, 39.9, 40). Is the process in control? Select one: a. no, there is a distinguishable pattern in the samples. b. Yes, no diameters exceeded the control limits. c. no, the range is not in control. d. no, some diameters exceeded the control limits. e. There is not enough information to make a decision.
Is a capable process a perfect process? That is, does acapable process generate only output that meets specifications? Explain.
Refer to Table S6.1-Factors for Computing Control Chart Limits (3 sigma) for this problem. Thirty-five samples of size 7 each were taken from a fertilizer-bag-filling machine at Panos Kouvelis Lifelong Lawn Ltd. The results were: Overall mean = 54.75 lb.; Average range R = 1.54 lb. a) For the given sample size, the control limits for 3-sigma x chart are: Upper Control Limit (UCL) = lb. (round your response to three decimal places).

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