7. Consider regression testing, assume that re-running a test takes 10 minutes. Assume that, on the average, 70% of tests will need to be re-run in every regression-test round. Consider a given a test...

Extracted text: 7. Consider regression testing, assume that re-running a test takes 10 minutes. Assume that, on the average, 70% of tests will need to be re-run in every regression-test round. Consider a given a test selection technique to be used to decide what tests to omit. What is the upper bound of the decision-time per test, the technique takes, for it to be considered efficient?