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Exercise 19-22 (LO19-4, LO19-6) A new machine has just been installed to cut and rough-shape large...

Exercise 19-22 (LO19-4, LO19-6)

A new machine has just been installed to cut and rough-shape large slugs. The slugs are then transferred to a precision grinder. One of the critical measurements is the outside diameter. The quality control inspector randomly selected five slugs each half-hour, measured the outside diameter, and recorded the results. The measurements (in millimeters) for the period 8:00 a.m. to 10:30 a.m. follow.

Outside Diameter (millimeters)
Time 1 2 3 4 5
8:00 87.3 87.3 88.1 87.0 87.0
8:30 86.9 88.5 87.6 87.5 87.4
9:00 87.9 88.4 86.9 87.6 88.2
9:30 86.0 88.0 87.2 87.6 87.1
10:00 86.9 87.0 87.2 87.3 86.9
10:30 88.2 86.4 87.3 87.1 87.6

  1. Determine the control limits for the mean and the range.(Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 2 decimal places.)

Mean of sample means = LCL = UCL =   
Mean of sample ranges =         LCL =          UCL =       

Exercise 19-16 (LO19-7)

Determine the probability of accepting lots that are 10%, 20%, 30%, and 40% defective using a sample of size 14 and an acceptance number of 3. (Round your answers to 3 decimal places.)

Percent Defective Probability of accepting lot
10
20
30
40

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orchestra answered 2 years ago
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