1. The Speedway Clinical Laboratory is a scientific blood-testing facility that receivessamples from local hospitals and clinics. The blood samples are passed through severalautomated tests, and the results are printed through a central computer that readsand stores the information about each sample that is tested.
Management is concerned about the quality of the service it provides and wants toestablish quality-control limits as a measure for the quality of its tests. Such managerialpractice is viewed as significant, because incorrect analysis of a sample can leadto a wrong diagnosis by the physician, which in turn might cost the life of a patient.
For this reason, 100 blood samples were collected at random each day after they hadgone through testing. After retesting was performed manually on this sample, theresults were:
|
Day |
Incorrect Analysis |
Day |
Incorrect Analysis |
Day |
Incorrect Analysis |
|
1 |
8 |
8 |
6 |
15 |
2 |
|
2 |
3 |
9 |
3 |
16 |
1 |
|
3 |
1 |
10 |
1 |
17 |
0 |
|
4 |
0 |
11 |
4 |
18 |
6 |
|
5 |
4 |
12 |
6 |
19 |
3 |
|
6 |
2 |
13 |
5 |
20 |
2 |
|
7 |
9 |
14 |
10 |
