Table

7.1

Factors for Calculating Three- Sigma Limits for the

\bar { X }

- chart and

R

- chart
$Table 7.1 Factors for Calculating Three- Sigma Limits for the \bar { X } - chart and R - chart -A milling operation has historically produced an average thickness of 0.005 inch with an average range of 0.0015 inch. Currently, the first three items from each batch of 20 are inspected. Use Table 1.. What is the value of LCL \bar { X } ) if the sample size is increased to 6? A) less than or equal to 0.0030 B) greater than 0.0030 but less than or equal to 0.0049 C) greater than 0.0049 but less than or equal to 0.0069 D) greater than 0.0069$

-A milling operation has historically produced an average thickness of 0.005 inch with an average range of 0.0015 inch. Currently, the first three items from each batch of 20 are inspected.
Use Table 1.. What is the value of LCL

\bar { X }

) if the sample size is increased to 6?
A) less than or equal to 0.0030
B) greater than 0.0030 but less than or equal to 0.0049
C) greater than 0.0049 but less than or equal to 0.0069
D) greater than 0.0069

The Upper Limit and Lower Specifications for a Service Are

Multiple Choice

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