Consider the control chart shown here. Does the pattern appear random?
Answer to relevant QuestionsApply the Western Electric rules to the control chart in Exercise 5.14. Are any of the criteria for declaring the process out of control satisfied? b. Estimate the process mean and standard deviation. c. Does fill weight seem to follow a normal distribution? One-pound coffee cans are filled by a machine, sealed, and then weighed by a local coffee store. After adjusting for the weight of the can, any package that weighs less than 16 oz is cut out of the conveyor. The weights of ...a. Estimate the process standard deviation. b. Construct a CUSUM chart for this process using standardized values of h = 5 and k = 1/2. a. Estimate the potential capability of the process. b. Estimate the actual process capability. c. How much improvement could be made in process performance if the mean could be centered at the nominal value?
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