STATISTICS F/BUSINESS+ECONOMICS-TEXT
STATISTICS F/BUSINESS+ECONOMICS-TEXT
13th Edition
ISBN: 9781305881884
Author: Anderson
Publisher: CENGAGE L
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Chapter 19.2, Problem 6E

A quality control process monitors the weight per carton of laundry detergent. Control limits are set at UCL = 20.12 ounces and LCL = 19.90 ounces. Samples of size 5 are used for the sampling and inspection process. What are the process mean and process standard deviation for the manufacturing operation?

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appropriate control charts and determine whether there is any cause for concern in the cutting process. Plot the information and look for patterns. PX ..56.7 Auto pistons at Wenming Chung's plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled. From sample sizes of 10 pistons produced each day, the mean and the range of this diameter have been as follows: DAY MEAN (MM) RANGE (MM) 156.9 4.2 153.2 153.6 155.5 156.6 5.0 4.5 What is the value of F? What is the value of R? What are the UCL, and LCLy, using 36? Plot the data. What are the UCL and LCLa, using 30? Plot the data. If the true diameter mean should be 155 mm and you want this as your center (nominal) line, what are the new UCL and
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