6 7 8

A milling operation has historically produced an average thickness of 0.005 inch with an average range of 0.00015 inch. Currently, the first three items from each batch of 20 are inspected.  What is the value of the LCLx?

[removed]		Less than or equal to 0.00100
[removed]		Greater than 0.00100 but less than or equal to 0.00299
[removed]		Greater than 0.00299 but less than or equal to 0.00479
[removed]		Greater than 0.00479

5 points   

Historically, the average diameter of the holes drilled has been 0.34 cm and the average range has been 0.14 cm. Assuming samples of size 7 will be taken.  What is the value of the LCLR?

[removed]		Less than or equal to 0.010
[removed]		Greater than 0.010 but less than or equal to 0.020
[removed]		Greater than 0.020 but less than or equal to 0.030
[removed]		Greater than 0.030

5 points   

Historically, the average diameter of the holes drilled has been 0.34 cm and the average range has been 0.14 cm. Assuming samples of size 7 will be taken.  What is the value of the UCLx?

[removed]		Less than or equal to 0.0898
[removed]		Greater than 0.0899 but less than or equal to 0.1242
[removed]		Greater than 0.0.1243 but less than or equal to 0.2478
[removed]		Greater than 0.2479 but less than or equal to 0.4264
[removed]		Greater than 0.4264

5 points   

A metal-cutting operation consistently averages 19.8 with a standard deviation of 0.4. The design engineers have established an upper specification limit of 20 and a lower specification limit of 17. Which statement concerning this process is TRUE?

[removed]		The process capability ratio is 1.46
[removed]		The process capability index is 1.33
[removed]		The process is in control
[removed]		None of these is true