Suppose that you have collected the following output data from a process.

	Observations
Sample Number	1	2	3	4
1	11.2	10.7	9.8	10.3
2	9.4	10.4	10	10.2
3	9.8	10.1	11	10.7

1. Determine CL, UCL, LCL for an R-chart.
2. Determine CL, UCL, LCL for an x-chart.
3. Suppose the specifications for the process output are 102. If the standard deviation, , of the process output is estimated to be 0.383 and the firm is seeking four sigma quality, is the process capable of producing at the target quality level? [Hint: Use the collected data in the above to estimate the process mean.]