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The data in the Table are temperature readings from a chemical process in C degrees, taken every two minutes. (Read the observations down, from left.)
The data in the Table are temperature readings from a chemical process in C degrees, taken every two minutes. (Read the observations down, from left.) The target value for the mean is 0 = 953.
Chemical ProcessTemperature Data
959
939
948
958
963
973
949
942
965
a. Apply an EWMA control chart to these data using = 0.2 and L = 3. Calculate the first two Upper and Lower limits and then the stable state limits.
b. Interpret the chart.
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