2. 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. 田 Day Sample Size Defects 1 100 2 120 3 3 190 14 4 190 240 22 245 7 105 165 245 25 10 255 38

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2. 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
100
6.
2
120
3.
190
14
4
190
240
22
6.
245
7
105
165
9.
245
25
10
255
38
a. Find the UCL.
b. Find the LCL.
c. Is the process in control? Why/why not?
Transcribed Image Text:2. 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 100 6. 2 120 3. 190 14 4 190 240 22 6. 245 7 105 165 9. 245 25 10 255 38 a. Find the UCL. b. Find the LCL. c. Is the process in control? Why/why not?
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