[Solution Library] In collecting data on average part length (X̄) from 30 subgroups, each of size 4, the following was
Question: In collecting data on average part length ( \[\bar{X}\] ) from 30 subgroups, each of size 4, the following was found:
\[\sum{{\bar{X}}} = 2400\] \[\sum{R}= 45\]The specifications on part length are: 81 ± 1.10:
- What is the upper control limit on the R-chart?
- What are the control limits on the \[\bar{X}\] chart?
- What proportion of the parts will be nonconforming?
Deliverable: Word Document 
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