0.20- UCL=0.1865 0.15 P=0.0975 0.10- 0.05- LCL-0.0005 16 0.00 14 10 12 Sample Proportion of Defects

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Minting Quarters Specifications for a quarter require that it be 8.33% nickel and 91.67% copper; it must weigh 5.670 g and have a diameter of 24.26 mm and a thickness of 1.75 mm; and it must have 119 reeds on the edge. A quarter is considered to be defective if it deviates substantially from those specifications. A production process is monitored, defects are recorded and the accompanying control chart is obtained. Does this process appear to be within statistical control? If not, identify any out-of-control criteria that are satisfied. Is the manufacturing process deteriorating?

0.20-
UCL=0.1865
0.15
P=0.0975
0.10-
0.05-
LCL-0.0005
16
0.00
14
10 12
Sample
Proportion of Defects
Transcribed Image Text:0.20- UCL=0.1865 0.15 P=0.0975 0.10- 0.05- LCL-0.0005 16 0.00 14 10 12 Sample Proportion of Defects
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