The plastic injection company needs to stablish control charts for key the dimensions of the molds. They will implement

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answerhappygod
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The plastic injection company needs to stablish control charts for key the dimensions of the molds. They will implement

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The plastic injection company needs to stablish control charts for key the dimensions of the molds. They will implement x-bar and R control charts on the process. There are 25 preliminary samples of size 5 on the internal critical dimension expressed in mm. Fir
the control limits that should be used on x-bar and R control charts. Assume that the 25 preliminary samples are in control in both charts
. Estimate the mean and the standard deviation.
X = 753.488
:R= 3.8809
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