Question

The table gives a set of outcomes and their probabilities. Let A be the event "the outcome is less than or equal to 4". Find P(A).
Outcome Probability
1 0.16
2 0.21
3 0.02
4 0.02
5 0.04
6 0.08
7 0.01
8 0.25
9 0.21

Answer 1

P(A) = P(1)+P(2)+P(3)+P(4) = 0.16 + 0.21 + 0.02 + 0.02 = 0.41 (41%).