Question: 6- Based on the following data (10 Points) Subgroups 1 2 3 4 5 6 7 8 Mean Range 74.01 0.05 73.99 0.07 74.00 0.03

6- Based on the following data (10 Points)
6- Based on the following data (10 Points) Subgroups 1 2 3 4 5 6 7 8 Mean Range 74.01 0.05 73.99 0.07 74.00 0.03 74.05 0.02 73.89 0.07 73.96 0.06 73.87 0.1 74.06 0.03 a) Calculate Xbar/R control charts (Consider n=4) b) Determine whether the process is in-control or not

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