Which of the following calculation is used to determine the overall tolerance for the serial combination of the component?
Response:

The comparative financial effects of reliability over the designed operating time T of two systems built to perform the same function can be obtained by comparing the
I. Failure rates.
II. Operating life of each system.
III. Cost of each system (including repair, replacement, and loss).
Response:

A company has produced a new module. The failure data on 40 returns are shown below.

If the time to failure follows a normal distribution, what is the probability that time to failure exceeds 20 hours ?
Response:

Failure occur on a system at 75, 79, 83, 85 hours. Assuming normality, one sided and unbiased the lower tolerance limit for 95% reliability with 90% confidence for this sample is:
Response:

The proper software tool for software development projects can help reduce test time. The software tools used to measure internal test coverage are called.
Response: