Question
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
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 | 105 | 9 |
| 2 | 110 | 3 |
| 3 | 185 | 14 |
| 4 | 200 | 6 |
| 5 | 235 | 22 |
| 6 | 255 | 7 |
| 7 | 100 | 5 |
| 8 | 160 | 7 |
| 9 | 240 | 25 |
| 10 | 260 | 38 |
a. Find the UCL.
b. Find the LCL.
c. Is the process in control? Why/why not?
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Intermediate Accounting
Authors: Donald E. Kieso, Jerry J. Weygandt, Terry D. Warfield, Nicola M. Young, Irene M. Wiecek, Bruce J. McConomy
10th Canadian Edition Volume 2
1118300858, 978-1118300855
