A point which is outside of the lower control limita.should be ignored unless another point is outside that limitO b. should be investigated because an assignable cause of variation might be presentO c. is impossible since the lower limit is always zeroO d. is an indication that no cause of variation is presentO e. should be ignored because it signifies better than average quality

An activity is said to be in control when the point lies between the upper limit and lower limit or…

Answered: A point which is outside of the low O…

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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Which of the following holds the best for a point that is outside the upper control limit of a R- chart Select one: a. should be investigated because an assignable cause of variation might be present b. is an indication that no cause of variation is present c should be ignored unless another point is outside that limit d. should be ignored because it signifies better than average quality
Which statement(s) is true, if a sample range which is lower than the lower control limit on an R-chart in which lower limit is zero should be ignored unless another point is outside that limit be ignored because it signifies better than average quality is an indication that no cause of variation is present d. is impossible e should be investigated because an assignable cause of variation might be present
Which the of the following holds the best for a point that is outside of the upper control limit on an R-chart Select one: a. should be ignored because it signifies better than average quality b. should be investigated because an assignable cause of variation might be present c. should be ignored unless another point is outside that limit d. is an indication that no cause of variation is present
Explain how a person using 2-sigma control charts will more easily find samples “out of bounds” than 3-sigma control charts. What are some possible consequences of this fact?
If the fraction defective is 0.4 based on a sample size of 100, the standard deviation used in the p-chart is about 0.10. True or False?
A control chart for fraction nonconforming is to be established using a center line of p=0.03. What sample size is required if we wish to detect a shift in the process fraction nonconforming to 0.08 with probability 0.50? 1269 475 73 316 216 2 105 150 265
At Gleditsia Triacanthos Company, a certain manufactured part is deemed acceptable if its lengthis between 12.45 to 12.55 inches. The process is normally distributed with an average of 12.49inches and a standard deviation of 0.014 inches. A) Is the process capable of meeting specifications? B) Does the process meet specifications?
Find the control limits for a 3-sigma u chart with process average number of nonconformities per inspection unit equaling to 3 and sample size n=3. a. UCL=18 LCL=0 b. UCL=9 LCL=0 c. UCL=36 LCL=18 d. UCL=6 LCL=0
Using samples of 197 credit card statements, an auditor found the following: Sample 1 3 errors Sample 2 3 errors Sample 3 5 errors Sample 4 9 errors 1. what alpha risk would control limits of .0470 and .0038 provide? 2. Using control limits of .0470 and .0038, is the process in control? 3. Construct a control chart for the process, assuming a fraction defective of 2 percent, using two-sigma control limits. Is the process in control?
Twenty samples (K=20) of 200 observations (n = 200) were taken by an operator at a workstation in a production process. The number of defective items in each sample was recorded as follows. Sample Number of Defects 1. 12 18 10 4. 15 16 6. 19 7. 17 8 12 11 10 14 11 16 12 15 13 13 14 16 15 18 16 17 17 18 18 20 19 21 20 22 Management wants to develop ap-chart using 3-sigma limits. What is the Lower Control Limit (LCL)? (calculation 2 sig fig)
If a point on a control chart falls outside one of the control limits, this suggests that the process variation is random and should not be investigated . True or false
You are an analyst for a company that produces parts for medical devices, and these parts must meet specifications required by your customer. You implement a process improvement to decrease the variation in diameter for one of the parts, and want to determine if the process improvement had any effect. What type of control chart would be most appropriate to determine if the process improvement did in fact reduce variation in the output of the process? Group of answer choices a X-bar b R c P d C e Cpk

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A point which is outside of the low O a. should be ignored unless Ob. O b. should be investigated be O c. is impossible since the lov O d. is an indication that no ca O e. should be ignored becaus