Question: The following table gives the sample means and standard deviations for six measurements each day of the purity of a polymer in a process. The

The following table gives the sample means and standard deviations for six measurements each day of the purity of a polymer in a process. The purity is monitored for 24 days. Determine the overall mean and standard deviation of the measurements and construct a control chart with upper and lower control limits. Do any of the means indicate a loss of statistical control?

927698054028 D-55, 2 1 7 4 3 7 3621 S-1. 1 1 1 0 1 1 0 1 1 1 1 472883736429 a|685046440349 665666567865 M-999999999999 ay 345678901234 083927698083 552174384 D-884 085472883785 85046438 1, 6 7 6 6 6 5 6 6 6 5 76 M-999999999999 538 ay 1 2 3 4 5 6 7 8 9 0 1 2

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