a. Find the UCL. b. Find the LCL. c. Is the process in control? Why/why not?

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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
1
100
8
120
4
190
10
4
190
7
240
20
245
8
7
105
4
8
165
6
245
27
10
255
37
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 1 100 8 120 4 190 10 4 190 7 240 20 245 8 7 105 4 8 165 6 245 27 10 255 37 a. Find the UCL. b. Find the LCL. c. Is the process in control? Why/why not?
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