An electronic component has design specification limits of 215±25 mhz. Due to variation in the parts that goes into this component, the actual yield varies. A sample of 100 indicated a mean of 220 mhz and standard deviation of 7 mhz.
a- Find the Process Capability Index (Cpk) for this process. Is this process capable? Why?
b- Find the process capability if we adjust the process mean to 217 and reduce variability by 15%. Is this modified process capable? Why?