Motorola's manufacturing facility in Tempe, Arizona produces high definition big screen televisions. Their quality monitoring engineer have taken a sample of 12 television sets and calculated the overall average length of the televisions screen to be 725 inches and the average range R
ˉ
inches. The control limits for 3 -sigma x
ˉ
chart are: Upper Control Limit (UCL χ
ˉ
​
−
​
)= inches (round your response to three decimal places). Lower Control Limit (LCL x
ˉ
​
)= inches (round your response to three decimal places). The control limits for the 3-sigma R-chart are: Upper Control Limit (UCL R
​
)= inches (round your response to three decimal places). Lower Control Limit (LCL R
​
)= inches (round your response to three decimal places).