QUESTION 6 1 points Save Answer A part that connects two levels should have a di

Question

QUESTION 6 1 points Save Answer A part that connects two levels should have a distance between the two holes of 4". It has been determined that x-bar and R-charts should be set up to determine if the process is in statistical control. Ten times throughout the course of a shift, the quality engineer collected four samples (n-4) from the manufacturing line for inspection. Range 0.04 4.01 3.98 0. Group 4 Group 5 Group 6 Group 7 Group 8 3.99 0.05 3.9 4.02 3.99 0.02 0.04 10 4.01 What is the x-doublebar value? 9980

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Mean Range Gr 1 4.01 0.04 Gr 2 3.98 0.06 Gr 3 4 0.02 Gr 4 3.99 0.05 Gr 5 4.03 0.06 Gr 6 3.97 0.02 Gr 7 4.02 0.02 Gr 8 3.99 0.04 Gr 9 3.98 0.05 Gr 10 4.01 0.06 Mean 3.998 0.042 X bar bar R bar bar n= 4 UCL (R) = R-bar x D4 0.095844 D4 = 2.282 LCL(R) = R-bar x D3 0 D3 = 0 UCL (X-bar) = X-bar-bar + (A2 x R-bar) 4.028618 A2 = 0.729 LCL(X-bar) = X-bar-bar - (A2 x R-bar) 3.967382

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