A quality control inspector is interested in maintaining a flatness specification for the surface of the metal disks.

A quality control inspector is interested in maintaining a flatness specification for the surface of the metal disks. Thirty flatness measurements. in (0.001 inch) were collected. Which probability density model - normal, lognormal, or Weibull - appears to provide the most suitable fit to the data?

2.49	2.14	1.63
4.46	3.69	4.58
1.28	1.28	1.59
0.82	2.23	7.55
2.20	4.78	5.24
1.54	3.81	2.13
1.45	2.21	6.65
6.40	2.06	4.06
2.66	1.66	2.38
6.04	2.85	3.70

Identify the associated parameter estimates. Use these parameter estimates to determine the mean and variance.

Expert Solution

from the given data

Mean= 95.59/30 = 3.3096

Variance = 3.19020

orchestra answered 2 years ago

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