Describe basic probability  set theory
Two hundred workers were asked that would a better economy lead you to switch jobs? The outcomes of the survey follow.
Answer

Very likely

Somewhat likely

Somewhat unlikely

Very unlikely

Don't know

Respondents

38

29

21

108

4

If a worker is selected at random and what is the probability that he or she
1) Is very unlikely to switch jobs?
2) Is somewhat likely or very likely to switch jobs?