The science of ergonomics studies the efficiency and comfort level of people in the workplace
The field of anthropology that studies the ways of living of past people is:archaeology.
Statistically speaking, studies show that a random sample of 200 people yields about the same data for ANY larger number of people, such as 5 million. Therefore, the minimum number of people surveyed...
That's easy teachers they study study so they can teach you and make you study.
social anthropology fool XP