In statistical process control, the hourly samples are taken. The sample means are: 156.46, 199.62, 189.31, 102.22, and 112.09 respectively. Also, the ranges of these samples are 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. If the upper control limit of X- bar chart is 159.11, what is the sample size of each sample? O a. None is correct O b. 5 O c. 6. O d. 7 e. 4

In statistical process control, the hourly samples are taken. The sample means are: 156.46, 199.62, 189.31, 102.22, and 112.09 respectively. Also, the ranges of these samples are 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. If the upper control limit of X- bar chart is 159.11, what is the sample size of each sample? O a. None is correct O b. 5 O c. 6. O d. 7 e. 4

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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Time left 0:08:09 In statistical process control, the hourly samples are taken. The sample means are: 156.46, 199.62, 189.31, 102.22, and 112.09 respectively. Also, the ranges of these samples are 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. If the upper control limit of X-bar chart is 157.87, what is the sample size of each sample? O a. 4 O b. 7 O c. 5 O d. 6 O e. None is correct CLEAR MY CHOICE S PAGE NEXT PAGE
In statistical process control, the hourly samples are taken. The sample means are: 156.46, 199.62, 189.31, 102.22, and 112.09 respectively. Also, the ranges of these samples are 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. If the upper control limit of R chart is 28.17, what is the sample size of each sample? O a. 5 O b. 6 O c. 7 O d. 4 O e. None is correct
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 1 3.06 .42 2 3.15 .50 3 3.11 .41 4 3.13 .46 5 3.06 .46 6 3.09 .45 Using the factors in Table 10.3 , determine upper and lower limits for mean and range charts. Is the process in control?
5-4 Sample data:Mean (Microns) (N=4) Minimum Maximum3.821 3.764 3.9993.946 3.804 4.2514.049 4.039 4.4543.793 3.779 3.9233.635 3.534 4.0684.046 3.578 4.5043.569 2.974 3.9084.084 3.779 5.6673.414 2.806 4.2565.319 5.168 6.3464.096 4.092 4.2234.108 3.957 4.3084.037 3.982 4.3933.789 3.691 3.8534.066 4.023 4.269 Constants: Sample Size N A2 D3 D4 2 1.88 0 3.27 3 1.02 0 2.57 4 0.73 0 2.28 5 0.58 0 2.11 6 0.48 0 2.00 7 0.42 0.08 1.92 8 0.37 0.14 1.86 9 0.34 0.18 1.82 10 0.31 0.22 1.78 11 0.29 0.26 1.74 12 0.27 0.28 1.72
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?
In 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.
A manager wishes to build a control chart for a process. A total of five (05) samples are collected with four (04) observations within each 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 respectively O a. 16.55, 11.47 O b. 18.55, 13.47 O c. 12.40, 19.72 O d. None is correct O e. 11.30, 21.65
A manager wishes to build a control chart for a process. A total of five (05) samples are collected with five (05) observations within each 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, 2.81,8.17, and 3.31 respectively. The lower and upper control limits of the R-chart are respectively О а. 0, 14.12 O b. None is correct О с. 0, 15.25 O d. 1, 10.5 О е. 0,13.32
A process that is assumed to be in control with limits of 89 t 4 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? Select one: a. Process mean is in-control b. None of above c. Not enough information to determine d. Process mean is out-of-control
A manager wishes to build a control chart for a process. A total of five (05) samples are collected with six (06) observations within each 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, 2.81,8.17, and 3.31 respectively. The lower and upper control limits of the x-bar chart are_
A manager wishes to build a control chart for a process. A total of five (05) samples are collected with six (06) observations within each 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, 2.81, 8.17, and 3.31 respectively. The lower and upper control limits of the X-bar chart area. noneb. 18.55, 13.47c. 13.27, 19.62d.16.55, 2.36 please I need full answer with the formula in paper if you could , please don't answer it in excel
A manager wishes to build a control chart for a process. A total of five (05) samples are collected with four (04) observations within each 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, 2.81,8.17, and 3.31 respectively. The lower and upper control limits of the x-bar chart are ,respectively O a. 11.59, 21.36 O b. 16.55, 11.47 Oc. 18.55, 13.47 O d. None is correct O . 12.40, 19.72