Question: A process is in statistical control with mean = 199 and estimated standard deviation 6. The control chart uses a sample size of n-4. Specifications

A process is in statistical control with mean = 199 and estimated standard deviation 6. The control chart uses a sample size of n-4. Specifications are at USL - 208 and LSL = 192. The quality characteristic is normally distributed (a) Calculate the capability indices - Cp Cpl Cpu and Cpk for the process. (b) interpret your result. Arena

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