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Question
A foreman wants to use an
chart to control the average length of the bolts manufactured. He has recently collected the six samples given below.Sample
1 1.99 2.01 2.02 2.02
2 2.00 2.00 2.01 2.01
3 1.98 1.99 2.01 1.98
4 2.01 2.02 2.02 1.99
5 1.99 1.99 2.01 1.99
6 2.03 1.98 2.03 2.04
Determine the LCL and the UCL for the R chart.
A. [0, .0685]
B. [0, .076]
C. [0, .03]
D. [0, .0601]
Answer
This answer is hidden. It contains 2 characters.
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