X and R control charts have been implemented for a critical quality characteristic of a product. The sample size used is six units. After collecting 30 process samples for this product, the means and deviations of these samples were calculated. The mean
X and R control charts have been implemented for a critical quality characteristic of a product. The sample size used is six units. After collecting 30 process samples for this product, the means and deviations of these samples were calculated. The mean
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter0: Preparing For Algebra
Section: Chapter Questions
Problem 35PRT
Related questions
Question
X and R control charts have been implemented for a critical quality characteristic of a product.
The
means and deviations of these samples were calculated.
The means and variances of these samples were calculated and the following was found:
(image)
a) Find the three sigma control limits for this plot.
Assume later that the process is statistically controlled.
b) If a special cause causes the process mean to change to 199, what is the probability of
detecting that change in the first sample taken after the change occurs? In the third sample?
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