Question
If a process operates at 1.80 σ-quality performance level, what is the percentage of the specification...
If a process operates at 1.80 σ-quality performance level, what is the percentage of the specification band that the process uses up?
Homework Answers
Answer #1
Answer:
The percentage of the specification band that the process uses up = 92.81%
Explanation:
The sigma value for the specification limit = 1.8 which means the mean value can be differed by 1.8 standard deviations on either side.
The percentage of the specification band that the process uses up is within the 1.8 standard deviations from the mean is obtained by from the z distribution table,
.
The values are obtained in excel. The screenshot is shown below,
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