In an existing process, we have found that the lower and upper control limits for X-bar chart are 8.09 and 8.59 respectively. Whereas, the I and upper control limits for R-chart are 0 to 1.25 respectively. The following measurements for one sample are taken: 8.05, 9.14, 8.28, and Using X-bar chart only, what we can conclude about the process mean O a. Insufficient information to conclude O b. Process mean is out-of-control. O. Process mean is in-control

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In an existing process, we have found that the lower and upper control limits for X-bar chart are 8.09 and 8.59 respectively. Whereas, the lower
and upper control limits for R-chart are 0 to 1.25 respectively The following measurements for one sample are taken: 8.05, 9.14, 8.28, and 9.25.
Using X-bar chart only, what we can conclude about the process mean
O a. Insufficient information to conclude
O b. Process mean is out-of-control.
O c.
Process mean is in-control
O d. Overall process is in-control
Transcribed Image Text:In an existing process, we have found that the lower and upper control limits for X-bar chart are 8.09 and 8.59 respectively. Whereas, the lower and upper control limits for R-chart are 0 to 1.25 respectively The following measurements for one sample are taken: 8.05, 9.14, 8.28, and 9.25. Using X-bar chart only, what we can conclude about the process mean O a. Insufficient information to conclude O b. Process mean is out-of-control. O c. Process mean is in-control O d. Overall process is in-control
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