Construct and interpret a normal probability plot of the waiting time measurements in Exercise 4.3.
Answer to relevant QuestionsWhat are chance and assignable causes of variability? What part do they play in the operation and interpretation of a Shewhart control chart? Consider the control chart shown here. Does the pattern appear random? b. Estimate the process mean and standard deviation. c. Does fill weight seem to follow a normal distribution? Fifteen successive heats of a steel alloy are tested for hardness. The resulting data are shown in Table 5E.9. Set up a control chart for the moving range and a control chart for individual hardness measurements. Is it ...In exercise
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