Question
A normally distributed quality characteristic has specificaton limits of LSL of 112 and USL of 141. The average of 51 random samples was 128
A normally distributed quality characteristic has specificaton limits of LSL of 112 and USL of 141. The average of 51 random samples was 128 and s=2.7. What is the point estimate of Cp? #.## [1] What is the point estimate for Cpk? #.## [2] Based on the mean of the specification limits and the mean of the random samples, is the process centered within the specification limits? [3] Yes (+/- .2), No, Almost (+/- 2.0). What are the lower and upper values for the 95% confidence interval for Cp? [4], [5] Would you recommend that this new process be implemented, yes or no? [6] Does this process meet six sigma requirements? [7] yes or no.
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1 Cp USL LSL 6 s 141 112 6 27 27 2 Cpk minCp Cpk min27 25 25 3 The process is n...Get Instant Access to Expert-Tailored Solutions
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Introduction To Statistical Quality Control
Authors: Douglas C Montgomery
7th Edition
1118146816, 978-1-118-3225, 978-1118146811
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