The table below describes the smoking habits of a group of asthma sufferers. $$\begin{array} { l c c c c c }
& \text { Nonsmoker } & \begin{array} { c }
\text { Occasional } \
\text { Smoker }
\end{array} & \begin{array} { c }
\text { Regular } \
\text { Smoker }
\end{array} & \begin{array} { c }
\text { Heavy } \
\text { Smoker }
\end{array} & \text { Total } \
\text { Men } & 431 & 50 & 71 & 49 & 601 \
\text { Women } & 382 & 48 & 86 & 39 & 555 \
\text { Total } & 813 & 98 & 157 & 88 & 1156
\end{array}$$ If one of the 1156 people is randomly selected, find the probability that the person is a man or a heavy smoker.
A) 0.554
B) 0.557
C) 0.596
D) 0.511

Question

The table below describes the smoking habits of a group of asthma sufferers. $$\begin{array} { l c c c c c } 
& \text { Nonsmoker } & \begin{array} { c } 
\text { Occasional } \
\text { Smoker }
\end{array} & \begin{array} { c } 
\text { Regular } \
\text { Smoker }
\end{array} & \begin{array} { c } 
\text { Heavy } \
\text { Smoker }
\end{array} & \text { Total } \
\text { Men } & 431 & 50 & 71 & 49 & 601 \
\text { Women } & 382 & 48 & 86 & 39 & 555 \
\text { Total } & 813 & 98 & 157 & 88 & 1156
\end{array}$$ If one of the 1156 people is randomly selected, find the probability that the person is a man or a heavy smoker.
A) 0.554
B) 0.557
C) 0.596
D) 0.511

Quizplus · Accepted Answer

The probability that the person is a man is 601/1156 = 0.520. The probability that the person is a heavy smoker is 88/1156 = 0.076. The probability that the person is a man or a heavy smoker is 0.520 + 0.076 - 0.004 = 0.592.

The Table Below Describes the Smoking Habits of a Group