Case Study I:A gageis to be used for data collection as part of a new SPC program. The qualityengineer would like to assess the gage capability. Thirty units produced in succession aretaken from the process and measured twice by the operator. The data are shown below:ReadingsPart no.123456789105.26.15.84.37.46.05.07.24.55.925.16.15.84.37.45.85.07.14.55.9Part no.11121314151617181920Readings15.06.05.16.75.37.0Or6.75.23.96.029025.06.05.26.5655.22876.86.75.3ابادان464.06.2Part no.2122232425ilalalaIS262728820293016.77.25.17.84.13.56.04.59.3Readingsامان(A) Does it appear that the operator is having difficulty using the gage?(B) What is your best estimate of the gage variability?(C) Estimate the product variability.6.026.67.14.97.94.03.55.94.39.15.9

The information given is stated as below:

Answered: A gage is to be used for data…

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 following data were collected on the number of nonconformities per unit for 10 time periods. Complete parts (a) and (b). Time 1 2 3 4 5 6 7 8 9 10 Nonconformities Per Unit 23 11 14 15 6 14 11 9 13 6 a. Construct the appropriate control chart and determine the LCL and UCL. What is the lower control limit? Select the correct choice below and fill in any answer boxes within your choice. A. LCL=enter your response here (Round to three decimal places as needed.) B. There is no lower control limit.
Which of the following is not considered to be one of the seven basic quality tools 1)control charts 2)check sheet 3)histogram 4)ABC analysis 5)cause - and - effect diagram
621 Daily samples of 100 power drills are removed from Drill Master's assembly line and in- spected for defects. Over the past 21 days, the following information has been gathered. Develop a 3 standard deviation (99.73% confidence) p-chart and graph the samples. Is the process in control? Number of Defective Drills Number of Defective Drills Day Day 6. 12 13 4 5. 14 3 15 16 17 6. 18 5. 8. 19 9. 20 3 10 21 7 11 643t n36 37 123 456N
Vera Johnson and Merris Williams manufacture vanishing cream. Their packaging process has four steps: (1) mix, (2) fill, (3) cap, and (4) label. They have had the reported process failures analyzed, which shows the following:Process failure FrequencyLumps of unmixed product 7Over- or underfilled jars 18Jar lids did not seal 6Labels rumpled or missing 29 Total 60 Draw a Pareto chart to identify the vital failures.
In each of the following, name the term defined or answer the question. Answers are listed at the bottom.1. A Six Sigma process that is running at the center of its control limits would expect this defect rate.2. The variation that can be clearly identified and possibly managed.3. Variation is inherent in the process itself.4. If a process has a capability index of 1 and is running normally (centered on the mean), what percentage of the units would one expect to be defective?5. An alternative to viewing an item as simply good or bad due to it falling in or out of the tolerance range.6. Quality characteristics are classified as either conforming or not conforming to specification.
Why is quality control needed? Give details of its various types
4. A soda drink bottling company is interested in winning a contract with a popular drink brand. To win the contract the company must show that it is capable of meeting 6o quality. The contract is for the production of 355mL cans, for which a tolerance of +0.5mL is specified. The company believes the facility is in statistical control and has calculated a global value of R 0.15mL and 355.025mL for its production system. The com- pany ran a capability test by obtaining 10 samples (each of 8 elements) on which capability calculations will be performed. The data obtained is in the following table: Sample R Sample F R 0.18319 354.98938 0.15714 355.02304 B 0.15361 355.01149 G 0.19205 355.06814 0.14892 355.00997 H 0.16240 355.05145 0.19912 355.01490 I 0.19179 355.00207 E 0.18389 355.04694 J 0.11900 355.02327 The parameters A2, D3 and D4 for various n are shown in the following table. A2 2 1.880 3.268 3 1.023 2.574 4 0.729 2.282 5 0.577 2.115 6 0.483 2.004 D3 D3 0.419 1.924 0.076 A2 D4 0. 7.…
What are typical performance testing errors?
What is a concrete example where lack of proper quality control led to negative consequences (not an ethical scandal) and explain what should have been done.
The upper and lower specification limits for a component are 5.20, and 5.30 ounces, respectively. The process standard deviation is .05, and the process average is 5.24 ounces. a) Calculate Cpk. (Show formula and calculations) b) Does the process posses six sigma capability? Why or Why not? Please explain.
19. Which of the following is not considered a dimension of quality? a. Performance b. Conformance c. Reliability d. Service after sale e. None of the above 20. A control chart used to monitor the number of defects per unit is the: a. p-chart b. R-chart c. X-bar chart d. c-chart e. Gantt chart
A professor records the number of students who complain each week throughout the semester. If the class size is forty students, what are 3 - sigma control limits for this class? Construct a control chart and interpret the data. Week Complaints Number 1. 5 2. 2 3. 7 4. 1 5. 3 6. 2 7. 8 8. 1 9. 3 10. 5 11. 4 12. 6 13. 3 14. 1 15. 4

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