The following data represent samples that were taken on 10 separate days. Each day has a...
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The following data represent samples that were taken on 10 separate days. Each day has a varying sample size and the number of defects for the items sampled is listed. We want to see if this process is consistent and in control. Day Sample Size Defects 1 100 3 2 110 4 3 195 8 4 190 5 245 250 100 170 250 230 a. Find the UCL. b. Find the LCL. c. Is the process in control? Why/why not? 67899 10 5 9 7 15 10 10 12 The following data represent samples that were taken on 10 separate days. Each day has a varying sample size and the number of defects for the items sampled is listed. We want to see if this process is consistent and in control. Day Sample Size Defects 1 100 3 2 110 4 3 195 8 4 190 5 245 250 100 170 250 230 a. Find the UCL. b. Find the LCL. c. Is the process in control? Why/why not? 67899 10 5 9 7 15 10 10 12
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Business Statistics for Contemporary Decision Making
ISBN: 978-0470910184
6th Edition
Authors: Ken Black
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