Question: To study process J, the quality engineer collected 20 subgroups of 5 observations and determined the following control limits for the Xbar-R chart: X bar

To study process J, the quality engineer

To study process J, the quality engineer collected 20 subgroups of 5 observations and determined the following control limits for the Xbar-R chart: X bar chart: UCL=17.18;LCL=13.82 R chart: UCL=7.50;LCL=0 Suppose that a new sample of five observations was collected and had the following values: 12.3, 16.7, 17.8,20.4,18.3. Based on the above control limits, which of the following statements is most accurate regarding the new sample? a. Both the mean and the range are in control b. The mean is in control, but the range is not in control c. The range is in control, but the mean is not in control d. Neither the mean nor the range is in control

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