Upper limit for each of the two control charts

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A quality characteristic X follows a Normal distribution with mean 100 and standard deviation 2 when the production process is in control. 

Part (a): Suppose that the lower and upper specification limits are 94 and 106, respectively. What is the percentage of produced product items that are non-conforming, i.e., do not conform to the specification limits, when the process is indeed in control?

Part (b): The management has decided to monitor the process with and R control charts with a sample size of 4. What should be the lower limit, center line and the upper limit for each of the two control charts?

Reference no: EM132367452

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