Question: The overall average on a process you are attempting to monitor is 50.0 units. The process population standard deviation is 1.84 . Sample size is

The overall average on a process you are attempting to monitor is 50.0 units. The process population standard deviation is 1.84 . Sample size is given to be 16.

a) determine the 3-sigma x-chart control limits

Upper Control Limit (UCLx)= ___ units

Lower Control Limit (LCLx)= __ units

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

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

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

c. How do the control limits change? (choose one)

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

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

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

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