2.  The overall average on a process you are attempting to monitor is 50.0 units. The process population standard deviation is 1.72. Sample size is given to be 4. Part 2 ​a) Determine the ​3-sigma x​-chart control limits.   ​(UCLx​)=Upper Control Limit _______ units ​(round your response to two decimal​ places). Lower Control Limit (LCL- ) = _____ units (round your response to two decimal places). How do the control limits change? A-The control limits for the 2 -sigma overbar x-chart and for the 3-sigma x -chart are the same B- The control limits are tighter for the 2-sigma overbar x -chart than for the 3-sigma x -chart. C- The control limits are tighter for the 3-sigma overbar x -chart than for the 2-sigma x -chart.

Practical Management Science
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Author:WINSTON, Wayne L.
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2. 

The overall average on a process you are attempting to monitor is
50.0
units. The process population standard deviation is
1.72.
Sample size is given to be
4.
Part 2
​a) Determine the ​3-sigma
x​-chart
control limits.
 
​(UCLx​)=Upper Control Limit _______ units
​(round your response to two decimal​ places).

Lower Control Limit (LCL- ) = _____ units (round your response to two decimal places).

How do the control limits change?

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

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

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

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