Question: Control charts are used as a quality control tool to check whether the process (production or service) is in control or not a. What does

Control charts are used as a quality control tool
Control charts are used as a quality control tool to check whether the process (production or service) is in control or not a. What does it mean "process is in control or not? (4 pts) b. Why it is important to use both mean-chart and range-chart on variables measured? (What is the difference in their purpose?) (4 pts) c. Can a process, which is in control", be judged as "incapable to produce within specific limits according to process capability analysis? Please explain. (4 pts)

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