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Protective coatings of plastic and metal are commonly used on manufactured goods to prevent wear and to add beauty to finished products. Coating flaws of various kinds, from small holes to large scratches, not only expose items to possible damage but also are unattractive to consumers. The following c chart monitors the numbers of surface flaws found on certain kitchen appliances. In this chart, 15 appliances are selected each hour, and the total number of coating flaw found on the collection of items is graphed on the chart. c chart 6543210678 7 1 1 2 3 Does the rule give an "out Rule # of control" signal? (Check the box that applies) O Yes O No • Rule 1: One or more points fall outside one of the chart's control limits • Rule 2: Nine points in a row are on the same side of the chart's centerline • Rule 3: Six points in a row are increasing (or decreasing). 5 7 Subgroup number For a process such as this to be "in statistical control," only random patterns of points should appear on the control chart. The process is "not in statistical control" when any non-random patterns appear on the chart. Three commonly used tests or rules for signaling that a process may not be in statistical control are: O Yes O No Using these three rules, identify which (if any) of the rules gives an "ou of control" signal, and indicate the subgroup number at which the signa is first given. 9 What is the subgroup number at which the signal is first given? 11 0 □ X 6 0

Protective coatings of plastic and metal are commonly used on manufactured goods to prevent wear and to add beauty to finished products. Coating flaws of various kinds, from small holes to large scratches, not only expose items to possible damage but also are unattractive to consumers. The following c chart monitors the numbers of surface flaws found on certain kitchen appliances. In this chart, 15 appliances are selected each hour, and the total number of coating flaw found on the collection of items is graphed on the chart. c chart 6543210678 7 1 1 2 3 Does the rule give an "out Rule # of control" signal? (Check the box that applies) O Yes O No • Rule 1: One or more points fall outside one of the chart's control limits • Rule 2: Nine points in a row are on the same side of the chart's centerline • Rule 3: Six points in a row are increasing (or decreasing). 5 7 Subgroup number For a process such as this to be "in statistical control," only random patterns of points should appear on the control chart. The process is "not in statistical control" when any non-random patterns appear on the chart. Three commonly used tests or rules for signaling that a process may not be in statistical control are: O Yes O No Using these three rules, identify which (if any) of the rules gives an "ou of control" signal, and indicate the subgroup number at which the signa is first given. 9 What is the subgroup number at which the signal is first given? 11 0 □ X 6 0

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Protective coatings of plastic and metal are commonly used on manufactured goods to prevent wear and to add beauty to finished products. Coating flaws of various kinds, from small holes to large scratches, not only expose items to possible damage but also are unattractive to consumers. The following c chart monitors the numbers of surface flaws found on certain kitchen appliances. In this chart, 15 appliances are selected each hour, and the total number of coating flaws found on the collection of items is graphed on the chart. c chart 7654321678 1 7 Subgroup number For a process such as this to be "in statistical control," only random patterns of points should appear on the control chart. The process is "not in statistical control" when any non-random patterns appear on the chart. Three commonly used tests or rules for signaling that a process may not be in statistical control are: 1 Does the rule give an "out Rule # of control" signal? (Check the box that applies) O Yes No 2 • Rule 1: One or more points fall outside one of the chart's control limits • Rule 2: Nine points in a row are on the same side of the chart's centerline • Rule 3: Six points in a row are increasing (or decreasing). 3 O Yes 3 O Yes 5 Using these three rules, identify which (if any) of the rules gives an "out of control" signal, and indicate the subgroup number at which the signal is first given. No O No What is the subgroup number at which the signal is first given? 0 9 0 0 11 X 6 0 00 -6
Transcribed Image Text:Protective coatings of plastic and metal are commonly used on manufactured goods to prevent wear and to add beauty to finished products. Coating flaws of various kinds, from small holes to large scratches, not only expose items to possible damage but also are unattractive to consumers. The following c chart monitors the numbers of surface flaws found on certain kitchen appliances. In this chart, 15 appliances are selected each hour, and the total number of coating flaws found on the collection of items is graphed on the chart. c chart 7654321678 1 7 Subgroup number For a process such as this to be "in statistical control," only random patterns of points should appear on the control chart. The process is "not in statistical control" when any non-random patterns appear on the chart. Three commonly used tests or rules for signaling that a process may not be in statistical control are: 1 Does the rule give an "out Rule # of control" signal? (Check the box that applies) O Yes No 2 • Rule 1: One or more points fall outside one of the chart's control limits • Rule 2: Nine points in a row are on the same side of the chart's centerline • Rule 3: Six points in a row are increasing (or decreasing). 3 O Yes 3 O Yes 5 Using these three rules, identify which (if any) of the rules gives an "out of control" signal, and indicate the subgroup number at which the signal is first given. No O No What is the subgroup number at which the signal is first given? 0 9 0 0 11 X 6 0 00 -6
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The objective is to use the three given rules and identify which of the rules gives an "out of control" signal and indicate the subgroup number at which the signal is first given.

 

 

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