Question

The table gives a set of outcomes and their probabilities. Let A be the event "the outcome is less than 3". Find P(not A).
Outcome Probability
1 0.06
2 0.12
3 0.06
4 0.07
5 0.54
6 0.15

Answer 1

A = {1, 2}, so P(A) = 0.06 + 0.12 = 0.18.
P(not A) = 1 − P(A) = 1 − 0.18 = 0.82.