General hythere, inc., is a manufacturer of hydraulic machine tools

     General HyThere, Inc., is a manufacturer of hydraulic machine   tools. It has had a history leakage trouble resulting from a certain critical   fitting. Twenty five samples of machined parts were selected, one per shift,   and the diameters of the fitting was measured.          Required:             a. Construct   x-bar- and R-charts for the data. What do you observe?          b. If the   regular machine operator was absent when samples 4, 8, 14, 22 were taken, how   will the results in part (a) be affected?            c. A second   table in the worksheet represents measurements taken during the next 10   shifts. Does the process continue to remain stable? What information does   this table provide to the quality control manager?     Can you show   how you entered the data into excel to get the graphs please.     Diameter Measurement (cm)     Observations    Sample 1 2 3 4          1 10.94 10.64 10.88 10.7   2 10.66 10.66 10.68 10.68   3 10.68 10.68 10.62 10.68   4 10.03 10.42 10.48 11.06   5 10.7 10.46 10.76 10.8   6 10.38 10.74 10.62 10.54   7 10.46 10.9 10.52 10.74   8 10.66 10.04 10.58 11.04   9 10.5 10.44 10.74 10.66   10 10.58 10.64 10.6 10.26   11 10.8 10.36 10.6 10.22   12 10.42 10.36 10.72 10.68   13 10.52 10.7 10.62 10.58   14 11.04 10.58 10.78 10.17   15 10.52 10.4 10.6 10.4   16 10.38 10.02 10.6 10.6   17 10.56 10.68 10.78 10.34   18 10.58 10.5 10.48 10.6   19 10.42 10.74 10.64 10.5   20 10.48 10.44 10.32 10.7   21 10.56 10.78 10.46 10.42   22 10.82 10.64 11 10.01   23 10.28 10.46 10.82 10.84   24 10.64 10.56 10.92 10.54   25 10.84 10.68 10.44 10.68            c) The following table represents   measurements taken during the next 10 shifts.            Observations    Sample 1 2 3 4          1 10.4 10.76 10.54 10.64   2 10.6 10.28 10.74 10.86   3 10.56 10.58 10.64 10.7   4 10.7 10.6 10.74 10.52   5 11.02 10.36 10.9 11.02   6 10.68 10.38 10.22 10.32   7 10.64 10.56 10.82 10.8   8 10.28 10.62 10.4 10.7   9 10.5 10.88 10.58 10.54   10 10.36 10.44 10.4 10.66    

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