A manager wishes to build a control chart for a process. A total of five (05) samples are collected with five (05) observations withineach sample. The sample means (X-bar) are; 15.36, 14.61. 16.36, 20.28, and 15.77 respectively. Also, the corresponding ranges are;10.79,8.37,4.81, 8.17, and 3.31 respectively. The lower and upper control limits of the x-bar chart are,respectivelyO a. 16.55, 11.47Ob. 12.40, 19.72Oc.12.36, 20.59Od. 18.55, 13.47De. None is correct

Answered: A manager wishes to build a control…

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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You pull 5 bags of chips off of the production line every hour. The process is currently under control. The average weights are calculated for each sample, and the average of those averages is 129.1. The ranges are calculated for each sample, and the average of those ranges is 4.1. What is the Upper Control Limit for the X-bar chart? Round your answer to one decimal place.
x and R Control Charts A cereal manufacturer fills cereal boxes to an averageweight of 20 ounces and has an average range of 2 ounces when the filling process is in control. A sample size of 10 boxes is used in evaluating the process.a. What are the CL, UCL, and LCL for the x and R charts?b. A sample with the following 10 measurements was just taken: 20, 21, 19, 18, 19, 21,22, 20, 20, 19. Is the process still in control?
The Dog Food Cereal Company fills boxes to an average weight of 30 lbs and an average range of 2 lbs. A sample size of 20 was used to assess the process. 1. What is the LCL for the R Chart? Group of answer choices -0.003 Zero 0.446 0.828 2. What is the UCL for the R Chart? Group of answer choices Rounds down to 2 2.9 Rounds down to 3.17 5 3. What is the UCL for the x bar chart? Group of answer choices The answer rounds down to 29.5 The answer rounds up to 31.5 The answer rounds up to 30.4 33.17
For question 1 choose from the following: x bar-chart, c-chart, p-chart, or none of the about. 1. The process involving filling of a high value medicine into standard containers of 50 gms. 2. From a perspective of Statistical Process Control (SPC), a six-sigma process will have which of the following attributes? a) The USL and LSL will be separated by a distance of six sigma b) The process center will be aligned with the LSL c) The number of defects produced by the process will be 0.0018 parts per million d) All of the above 3. Which of the following statements depict the meaning of "total" in the term TQM? a) The total of all efforts put by the employees towards quality b) Total satisfaction of the customers about a company's products and services c) Ensuring every supplier follows quality practices in their work place d) Making quality happen everywhere in an organization by involving everyone
Shift in the process mean for a measured variable would be best detected by a O a. p chart P b. chart Of. a chart O d. x barchart O e. R Chart
What is it important to prove that a process is proven capable before developing statistical control limit ?
Why are most processes not in statistical control when they are first sampled for control chart purposes? *250 words minimum. Thank you!
The results of a time study to perform a qualitycontrol test are shown in the following table. On the basis ofthese observations, determine the normal and standard timefor the test, assuming a 23% allowance factor
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 histogram
Checkout time at a supermarket is monitored using a mean and a range chart. Six samples of n = 20 observations have been obtained and the sample means and ranges computed: Sample Mean Range Sample Mean Range 1 3.06 .42 4 3.13 .46 2 3.15 .50 5 3.06 .46 3 3.11 .41 6 3.09 .45 a. Using the factors in Table 10.3 , determine upper and lower limits for mean and range charts. b. Is the process in control?
quality control You are a quality manager in Infinity automotive company, and you are in the processof setting-up a Shewhart control chart, and you have collected five samples from theproduction line, where n= 5. Based on control chart rules you should collect at least20 samples to determine X-bar and R-bar, which will become the center line of yourchart, but you have decided to cut-corners and are planning to base your chart on onlythese five samples. Calculate the value of X-bar and R-bar of these five samples. Thesamples data collected from the production line is given in Table Q4.1. Note n = 5.
A process considered to be in control measures an ingredient in ounces. Roberto Baggio, a quality inspector took 20 samples, each with 8 observations as follows: thats in the pictuer after that using this information, obtain three-sigma (i.e., z=3) control limits for a mean control chart and control limits for a range chart, respectively. It is known from previous experience that the standard deviation of the process is 0.693. First: perform all actions and calculations needed to answer the question. All equations/calculations needed to be fully written STEP by STEP. No short calculations or direct answers/results will be accepted. This applies to the calculations for both types of control limits (mean and range). Second: Explain the process followed to identify each type of control limit and any observations made in the problem-solving process. thank you very much

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