Use the General Addition Rule
-The table lists the drinking habits of a group of college students. If a student is chosen at random, find the probability of getting someone who is a man or a non-drinker. Round your answer to three decimal places.
$\begin{array}{l|c|c|c|c}
\text { Sex } & \text { Non-drinker } & \text { Regular Drinker } & \text { Heavy Drinker } & \text { Total } \
\hline \text { Man } & 135 & 49 & 5 & 189 \
\text { Woman } & 187 & 21 & 8 & 216 \
\text { Total } & 322 & 70 & 13 & 405
\end{array}$

A) $0.928$
B) $0.947$
C) $0.941$
D) $0.827$

Question

Use the General Addition Rule
-The table lists the drinking habits of a group of college students. If a student is chosen at random, find the probability of getting someone who is a man or a non-drinker. Round your answer to three decimal places.
$\begin{array}{l|c|c|c|c}
\text { Sex } & \text { Non-drinker } & \text { Regular Drinker } & \text { Heavy Drinker } & \text { Total } \
\hline \text { Man } & 135 & 49 & 5 & 189 \
\text { Woman } & 187 & 21 & 8 & 216 \
\text { Total } & 322 & 70 & 13 & 405
\end{array}$

A) $0.928$
B) $0.947$
C) $0.941$
D) $0.827$

Quizplus · Accepted Answer

The probability of selecting a man or a non-drinker is calculated by adding the probability of selecting a man to the probability of selecting a non-drinker, then subtracting the probability of selecting a man who is also a non-drinker to avoid double counting. This gives $\frac{189}{405} + \frac{322}{405} - \frac{135}{405} = \frac{376}{405} \approx 0.928$.

Use the General Addition Rule -The Table Lists the Drinking

Use the General Addition Rule
-The Table Lists the Drinking