The table below describes the smoking habits of a group of asthma sufferers. $\begin{array}{r|crrr}
&&Light& Heavy \
& \text { Nonsmoker } & \text { smoker } & \text { smoker } & \text { Total } \
\hline \text { Men } & 320 & 78 & 78 & 476 \
\text { Women } & 393 & 87 & 78 & 558 \
\text { Total } & 713 & 165 & 156 & 1034
\end{array}$ If one of the 1034 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. $\begin{array}{r|crrr} 
&&Light& Heavy \
& \text { Nonsmoker } & \text { smoker } & \text { smoker } & \text { Total } \
\hline \text { Men } & 320 & 78 & 78 & 476 \
\text { Women } & 393 & 87 & 78 & 558 \
\text { Total } & 713 & 165 & 156 & 1034
\end{array}$ If one of the 1034 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

The probability that the person chosen is a female nonsmoker is calculated by dividing the number of female nonsmokers by the total number of subjects. There are 393 female nonsmokers and 1034 subjects in total, so the probability is $393 / 1034 = 0.380$.

The Table Below Describes the Smoking Habits of a Group