The table below describes the smoking habits of a group of asthma sufferers.
If one of the 1,034 subjects is randomly selected,find the probability that the person chosen is a female nonsmoker.
A)0.380
B)0.540
C)0.551
D)0.849
E)0.704

Question

The table below describes the smoking habits of a group of asthma sufferers. 
If one of the 1,034 subjects is randomly selected,find the probability that the person chosen is a female nonsmoker.
A)0.380 
B)0.540 
C)0.551 
D)0.849 
E)0.704

Quizplus · Accepted Answer

From the table, we can see that there are a total of 549 females and 778 nonsmokers out of the 1,034 subjects. 
To find the probability of selecting a female nonsmoker, we need to find the number of subjects who are both female and nonsmokers, and divide by the total number of subjects. 
From the table, we can see that there are 209 female nonsmokers. 
So the probability of selecting a female nonsmoker is: 
P(female nonsmoker) = 209/1034 ≈ 0.380

The Table Below Describes the Smoking Habits of a Group