A quality control program is considered to be

Maintainability is

You have been asked to sample a lot of 500 units from vendor whose past quality has been about 2% defective. A sample of 40 pieces is drawn from the lot and you have been told to reject the lot if you find two or more parts defective. What is the probability of finding two or more parts defective?

The probability of accepting a lot of unacceptable quality is known as

What is the standard deviation of the following data?
3.2, 3.1, 3.3, 3.3, 3.1