According to the Arizona chapter of the American lung associ

According to the Arizona chapter of the American lung association, 7% of the population has lung disease. Of those people having lung, 90% are smokers; and of those not having lung disease, 25.3% are smokers. For convenience, use the following variable definitions to answer the following questions if a person is chosen from society at random…

S = Event the person selected is a smoker

L1 = Event the person selected has no lung disease

L2 = Event the person selected has lung disease

1) What is P(L2)?

2) What is P(L1)?

3) What is P(S|L1)?

4) What is P(S|L2)?

5) What is the probability of being a smoker, P(S)?

6) What is the probability that a randomly selected smoker has lung disease? P(L2|S)

Solution