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Question
Suppose that
and R charts based on subgroups of size 4 are being used to monitor the tire diameter of a new radial tire. The and R charts are found to be in statistical control with
= 50.25, 
= 8. inches. A histogram of the tire diameter measurements indicates that these measurements are approximately normally distributed. Calculate the estimate of the percentage of tires that are out of specification.A. 1.93%
B. 2.68%
C. 1.62%
D. 17.36%
Answer
This answer is hidden. It contains 2 characters.
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