Question: A process is in statistical control with ? b a r ( x ) = 1 9 9 and ? b a r ( R

A process is in statistical control with ?bar(x)=199 and ?bar(R)=3.5. The control chart uses a sample size of n=4. Specifications are at 200+-8. The quality characteristic is normally distributed.
a. Estimate the potential capability of the process.
b. Estimate the actual process capability.
A process is in statistical control with ?bar(x)=199 and ?bar(R)=3.5. The

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