Question: If a process generates a sample for which the range falls below the Lower Control Limit of the R chart, what should the operator do?

If a process generates a sample for which the range "falls" below the Lower Control Limit of the R chart, what should the operator do? O Stop the process because the process is out of control on the X-bar chart. O Stop the process because the process is out of control on the R chart and investigate what went wrong to correct it. O Stop the process because the process is out of control on both the X-bar chart and the R chart. O Do nothing. The process is only out of control on one chart, the R chart. Stop the process because the process is out of control on the R chart and investigate what caused the process to get better

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