What is the USL for a process that is producing 2.87% above spec if the process mean is 10 and the process standard deviation is 1? a. 11.90 b. 12.00 c. 22.00 d. None of the above
What is the USL for a process that is producing 2.87% above spec
if the process mean is 10 and the
process standard deviation is 1?
a. 11.90
b. 12.00
c. 22.00
d. None of the above
Homework Answers
Answer: a; 11.90
Explanation:
The process produces 2.87% above specification, means (100-2.87) = 97.13% are within specification. Hence corresponding z-value = 1.90
z= (USL-Mean) / standard deviation
1.90 = (USL-10) / 1
USL = 1.90+10 = 11.90
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What is the USL for a process that is producing 2.87% above spec if the process mean is 10 and the process standard deviation is 1? a. 11.90 b. 12.00 c. 22.00 d. None of the above
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