# Math Help - conditional probability

1. ## conditional probability

From a medical study of 10 000 male patients, it was found that 2500 were smokers; 720 died from lung cancer and of these, 610 were smokers. Determine:

a) P(dying from lung cancer l smoker)
b) P(dying from lung cancer l non-smoker)

2. Originally Posted by johett
From a medical study of 10 000 male patients, it was found that 2500 were smokers; 720 died from lung cancer and of these, 610 were smokers. Determine:
a) P(dying from lung cancer l smoker)
b) P(dying from lung cancer l non-smoker)
Suppose that S the event that a employee smokes and C dies of lung cancer.
Then here are the basic probabilities: $P(S) = 0.25,\,P(C) = 0.072,\,\& \,P(S \cap C) = 0.061$.
You take it from there.