Question: a). According to the sample mean and sample range of 6 observations of each sample of a process, construct upper and lower control limit for

a). According to the sample mean and sample range of 6 observations of each sample of a process, construct upper and lower control limit for both sample mean and sample range control charts.

b). Determine if the process is capable by calculating Cp index

Sample	Mean	Range	Standard deviation	Lower design specification	Upper design specification
1	42.7	0.4	1.00	39	44
2	42.5	0.3
3	42.4	0.5

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