Question: In a fabric manufacturing factory, the quality control process using control charts from SPC. In an hour there are a total of 5 samples are

In a fabric manufacturing factory, the quality
In a fabric manufacturing factory, the quality control process using control charts from SPC. In an hour there are a total of 5 samples are taken each having 6 observations regarding the thickness of fabric in measured in millimeters. In a particular hour, the sample means (X-bar) are noted to be: 156.46, 199.62, 189.31, 102.22, and 112.09 respectively. In the same sample, the corresponding ranges are: 11.97.12.17, 13.94, 11.86, and 11.83 respectively. What are the lower and upper control limits for the chart? O a. 0.29.71 O b. 0,28.17 O c 0.24.71 O d. 0,30.11 O e. None is correct Of. 0.26.07

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