Question: For the data in Problem, if the process target is 50.25 with spec limits +/-5, describe statistically the problems that would occur if you used your spec limits on a control chart where n = 5. Discuss type I and type II error.
Problem: A Rochester, New York, firm produces grommets that have to fit into a slot in an assembly. Following are dimensions of grommets (in millimeters):
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a. Use x and R charts to determine if the process is in control.