A quality characteristic X follows a Normaldistribution with mean 100 and standard deviation 2 when theproduction process is in control.
Part (a): Suppose that the lower and upperspecification limits are 94 and 106, respectively. Whatis the percentage of produced product items that arenon-conforming, i.e., do not conform to the specification limits,when the process is indeed in control?
Part (b): The management has decided to monitorthe process with and R control charts with a sample sizeof 4. What should be the lower limit, centerline and theupper limit for each of the two control charts?
