Amanager 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 Oe. 12.40, 19.72

Amanager 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 Oe. 12.40, 19.72

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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Given there are five (05) sample taken. 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. If the upper control limit for R- chart is 13.61, what should be the most appropriate the sample size? а. 4 O b. 5 O c. 7 O d. 3 e. None is correct
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.
A manager wishes to build a control chart for a process. A total of five (05) samples are collected with eight (08) 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 Select one .a 12.84 ,0.54 None is correct .C 15.25 ,0 .d 14.11,0 Le 12.44,0.94 The correct answer is: 0.94, 12.44
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; 10.79,8.37,4.81, 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 Ob. 12.40, 19.72 Oc. 12.36, 20.59 Od. 18.55, 13.47 De. None is correct
2- Quality Control Charts A local brewery and bottling plant wants to keep track of the bottling filling equipment's accuracy, Bottles are to be filled with exactly 16 ounces of the drink. The following is data from the bottling equipment where 5 samples of bottles filled were pulled every hour and measured for actual quantity filled. 1- Calculate the UCL, LCL and mean for the X-bar and R data 2- Draw an X-Bar chart and a R chart. 3- Is this filling process in control or out of control? Hour X-bar R 1 16.05 .20 2 16.03 3 15.96 4 15.97 16.03 16.06 15.98 16.09 15.94 16.01 5 6 7 8 9 10 @n-5: A2 = 0.58, D3 =0, D4 = 2.11 .25 .62 .58 .71 .37 .46 .21 .35 .29
Hermitage DNA Labs, LLC collected temperature readings in an analysis process. The data can be found in the Problems Data Compute the mean and range of each sample and calculate control limits for x-bar and R charts using the appropriate From the charts constructed, does the process appear to be in statistical control?
A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 45.00, and the average range is 7.90. From Table S6.1, the appropriate value of D3 is 0, and D4 is 2.115. What are the UCL and LCL, respectively, for this range chart? (Do not round intermediate calculations. Round final answer to two decimal places.) OA. 12.05 and 0.00 OB. 10.02 and 5.79 O C. 16.71 and 0.00 O D. 68.70 and 21.30 OE. 52.90 and 37.10
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Given there are five (05) sample taken. 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. If the upper control limit for X-bar chart is 20.59, what should be the most appropriate the sample size? О а. 5 O b. 3 О с. 4 O d. 2 O e. None is correct БЕ NEXT PAGE https://elearn.sc 321
Studies on a machine that molds plastic water pipe indicate that when it is injecting 25.76 mm diameter pipe, the process standard deviation is 0.75 mm. The pipe has a specification of 25.76 mm plus or minus 1.95 mm. What is the process capability index (Cp)? O a. 0.4333 b. 2.6 О с. 1.733 O d. 0.8667
In an existing process, we have found that the lower and upper control limits for X-bar chart are 8.09 and 8.59 respectively. Whereas, the lower and upper control limits for R-chart are 0 to 1.25 respectively The following measurements for one sample are taken: 8.05, 9.14, 8.28, and 9.25. Using X-bar chart only, what we can conclude about the process mean O a. Insufficient information to conclude O b. Process mean is out-of-control. O c. Process mean is in-control O d. Overall process is in-control
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