Question: A process is in statistical control with X - bar - bar = 1 8 2 and R - bar = 2 . 5 .

A process is in statistical control with X-bar-bar =182 and R-bar =2.5. The control chart uses a sample size of n =6.
Specifications are at 180+/-5. The quality characteristic is normally distributed.
Estimate the potential capability of the process. Analyze the result. (4 pts.)
Estimate the actual capability of the process. Analyze the result. (4 pts.)
Find a 99% confidence interval on Cp.(4 pts.)
How much improvement could be made in process performance (fallout) if the mean were centered at Mu =180?(4 pts.)

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