Question: The data below represent precision length measurements of 80 consecutive structural frame members coming off the assembly line. Sample # x1 x2 *3 x4 Sample

The data below represent precision length measurements of 80 consecutive structural

The data below represent precision length measurements of 80 consecutive structural frame members coming off the assembly line. Sample # x1 x2 *3 x4 Sample # x1 x2 x4 1 74.38 74.34 74.35 74.40 11 74.37 74.37 74.41 74.37 2 74.39 74.38 74.41 74.37 12 74.40 74.37 74.39 74.33 3 74.35 74.39 74.43 74.41 13 74.42 74.37 74.35 74.41 4 74.37 74.40 74.32 74.37 14 74.36 74.38 74.40 74.42 5 74.40 74.35 74.39 74.39 15 74.36 74.36 74.30 74.34 6 74.39 74.34 74.34 74.38 16 74.38 74.34 74.34 74.36 7 74.38 74.34 74.37 74.39 17 74.41 74.45 74.42 74.38 8 74.38 74.34 74.37 74.38 18 74.31 74.29 74.40 74.51 LO 74.37 74.35 74.39 74.38 19 74.42 74.33 74.40 74.28 10 74.40 74.38 74.37 74.39 20 74.28 74.34 74.28 74.45 a) Create x and R charts from the given data. b) Is this process in control

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