The overall average on a process you are attempting to monitor is 55.0 units. The process population standard deviation is 1.84. Sample size is given to be 4. a) Determine the 3-sigma x-chart control limits. Upper Control Limit (UCL;)= 57.76 units (round your response to two decimal places). Lower Control Limit (LCL;) = 52.24 units (round your response to two decimal places). b) Now determine the 2-sigma x-chart control limits. Upper Control Limit (UCL;) = 56.84 units (round your response to two decimal places). Lower Control Limit (LCL-) = 53.16 units (round your response to two decimal places). How do the control limits change? O A. The control limits for the 2-sigma x-chart and for the 3-sigma x-chart are the same. O B. The control limits are tighter for the 2-sigma x-chart than for the 3-sigma X-chart. OC. The control limits are tighter for the 3-sigma X-chart than for the 2-sigma x-chart.

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