Choose the one alternative that best completes the statement or answers the question.
-The table lists the smoking habits of a group of college students. $$\begin{array} { l | c | c | c | c }
\text { Sex } & \text { Non-smoker } & \text { Regular Smoker } & \text { Heavy Smoker } & \text { Total } \
\hline \text { Man } & 135 & 36 & 5 & 176 \
\text { Woman } & 187 & 21 & 15 & 223 \
\text { Total } & 322 & 57 & 20 & 399
\end{array}$$ If a student is chosen at random, find the probability of getting someone who is a regular or heavy smoker. Round your answer to three decimal places.
A)0.193
B)0.662
C)0.221
D)0.128

Question

Choose the one alternative that best completes the statement or answers the question.
-The table lists the smoking habits of a group of college students. $$\begin{array} { l | c | c | c | c } 
\text { Sex } & \text { Non-smoker } & \text { Regular Smoker } & \text { Heavy Smoker } & \text { Total } \
\hline \text { Man } & 135 & 36 & 5 & 176 \
\text { Woman } & 187 & 21 & 15 & 223 \
\text { Total } & 322 & 57 & 20 & 399
\end{array}$$ If a student is chosen at random, find the probability of getting someone who is a regular or heavy smoker. Round your answer to three decimal places.
A)0.193
B)0.662
C)0.221
D)0.128

Quizplus · Accepted Answer

The probability of selecting a regular or heavy smoker is the sum of regular smokers and heavy smokers divided by the total number of students. This is $\frac{57 + 20}{399} = \frac{77}{399} \approx 0.193$.

Choose the One Alternative That Best Completes the Statement or Answers