Acme Biotech requires all new employees to undergo a drug testscreening.  As part of the collection process, key donorinformation is entered on a form referred to as the“Non-Federal Four-Part Drug Testing Custody and ControlFormâ€. To test the effectiveness of the process, managersreview randomly selected forms. It has been determined from earlierstudies that six typical types of mistakes or errors are made whencompleting the form. Assume each Control Form represents one“unitâ€, and then calculate the following attribute qualitymeasures:
- Defects per unit (dpu)
- Defects per opportunity (dpo)
- Defects per million opportunities (dpmo)
- Sigma capability (σcap)
Results from Sample of Drug Testing Custody ControlForms
Donor | Invalid Social Sec. | Wrong Phone number | Wrong D.O.B. | Missing Donor Signature | Missing Date of Signature | Missing Collection time | Number of Defects | Defective (Yes/No) |
1 | x | | | | | x | | |
2 | | | | | | | | |
3 | x | x | x | | | | | |
4 | | | | | | | | |
5 | | | | | | x | | |
6 | x | | | | | | | |
7 | | | | | | | | |
8 | | | | x | | | | |
9 | | | | | | | | |
10 | | | | | | | | |
11 | | | x | | x | | | |
12 | | | | | | | | |
13 | | | | | | | | |
14 | | | | | | x | | |
15 | | x | x | | | | | |
16 | | | | | | | | |
17 | | | | | | x | | |
18 | | | | | | | | |
19 | | | | | | | | |
20 | x | | | | | | | |
21 | | | | | | | | |
