Table 5E.3 presents 20 subgroups of five measurements on the time it takes to service a customer.
b. Following establishing of the control charts in part (a), 10 new samples have been provided in Table 5E.4. Plot the new and R values using the control chart limits you established in part (a) and draw conclusions.
Answer to relevant QuestionsParts manufactured by an injection modeling process are subjected to a compressive strength test. Twenty samples of five parts each are collected, and the compressive strengths (in psi) are shown in Table 5E.6. The viscosity of a polymer is measured hourly. Measurements for the last 20 hours are shown as follows: a. Does viscosity follow a normal distribution? b. Set up a control chart on viscosity and a moving range chart. Does ...In exercise a. Estimate the potential capability. b. Estimate the actual capability. c. How much could process fallout be reduced by shifting the mean to the nominal dimension? Assume that the quality characteristic is normally ...Discuss the rational subgroup concept. What part does it play in control chart analysis?
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