Minimize labor costs, how many testers should they use for testing.
The information technology shop of Globus Enterprises is developing software to control the manufacturing processes of a chemical plant. As part of the systems integration effort, one team of software testers in given responsibility to conduct twenty tests on software components that control separation of feedstock into different chemical products. Experience shows that this testing effort can be carried out in different in amounts of time, depending on how many testers are employed on it, as shown in the following table:
|
Number of Testers
Employed
|
Duration of Testing
Effort
|
|
3 testers
|
14 days
|
|
4 testers
|
10 days
|
|
5 testers
|
9 days
|
|
6 testers
|
8 days
|
The cost to Globus of employing a tester averages out to $220 a day.
1. Draw the graph showing total cost expenditures for different numbers of testers employed.
2. If Globus's goal is to minimize labor costs, how many testers should they use to carry out the testing effort? Explain your rationale.