Question: The overall average on a process you are attempting to monitor is 60.0 units. The process population standard deviation is 1.72. Sample size is given

The overall average on a process you are attempting to monitor is 60.0 units. The process population standard deviation is 1.72. Sample size is given to be 4.

a) Determine the 3-sigma x-chart control limits.

Upper Control Limit (UCLx)=enter your response here units (round your response to two decimal places).

Lower Control Limit (LCLx)=enter your response here units (round your response to two decimal places).

b) Now determine the 2-sigma x-chart control limits.

Upper Control Limit (UCLx)=enter your response here units (round your response to two decimal places).

Lower Control Limit (LCLx)=enter your response here units (round your response to two decimal places).

How do the control limits change?

A. The control limits for the 2-sigma x-chart and for the 3-sigma x-chart are the same.

B. The control limits are tighter for the 3-sigma x-chart than for the 2-sigma x-chart.

C. The control limits are tighter for the 2-sigma x-chart than for the 3-sigma x-chart.

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