Question

I need to find P(s), P(s’), odds in favor of event S and odds against event S.

Answer 1

The probability of event S occurring is the same as the odds in favor of this event.

Since Samsung ships 21.8% of OLED, the probability that a randomly selected OLED was made by Samsung (event S) is 21.8%.

Writing it in decimal form, we obtain:

`P(S)=(21.8)/(100)=0.218`

And the probability of the complementary event S' happening is:

`P(S^(\prime))=1-P(S)=1-0.218=0.782`

Notice that if S' happens, then S won't happen, since they are complementary events. Therefore, the probability of 0.782 equals the odds against S.

Therefore, the answers are:

(a) 0.218

(b) 0.782

(c) 0.218

(d) 0.782