Use the Addition Rule for Disjoint Events
-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 non-drinker. Round your answer to three decimal places.
$\begin{array}{l|c|c|c|c}
\text { Sex } & \text { Non-drinker } & \text { Regular Drinker } & \text { Heavy Drinker } & \text { Total } \
\hline \text { Man } & 135 & 43 & 5 & 183 \
\text { Woman } & 187 & 21 & 7 & 215 \
\text { Total } & 322 & 64 & 12 & 398
\end{array}$

A) $0.809$
B) $0.930$
C) 1
D) $0.191$

Question

Use the Addition Rule for Disjoint Events
-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 non-drinker. Round your answer to three decimal places.
$\begin{array}{l|c|c|c|c}
\text { Sex } & \text { Non-drinker } & \text { Regular Drinker } & \text { Heavy Drinker } & \text { Total } \
\hline \text { Man } & 135 & 43 & 5 & 183 \
\text { Woman } & 187 & 21 & 7 & 215 \
\text { Total } & 322 & 64 & 12 & 398
\end{array}$

A) $0.809$
B) $0.930$
C) 1
D) $0.191$

Quizplus · Accepted Answer

The probability of selecting a non-drinker is the number of non-drinkers divided by the total number of students: $ \frac{322}{398} \approx 0.809 $.

Use the Addition Rule for Disjoint Events -The Table Lists

Use the Addition Rule for Disjoint Events
-The Table Lists