Find the indicated probability.
-The table below shows the soft drink preferences of people in three age groups. $\begin{array}{r|ccc}
& \text { cola } & \text { root beer } & \text { lemon-lime } \
\hline \text { under 21 years of age } & 40 & 25 & 20 \
\text { between 21 and 40 } & 35 & 20 & 30 \
\text { over 40 years of age } & 20 & 30 & 35
\end{array}$

If one of the 255 subjects is randomly selected, find the probability that the person is over 40 years of age.
A) $\frac { 1 } { 3 }$
B) $\frac { 3 } { 5 }$
C) $\frac { 1 } { 2 }$
D) $\frac { 2 } { 5 }$

Question

Find the indicated probability.
-The table below shows the soft drink preferences of people in three age groups. $\begin{array}{r|ccc} 
& \text { cola } & \text { root beer } & \text { lemon-lime } \
\hline \text { under 21 years of age } & 40 & 25 & 20 \
\text { between 21 and 40 } & 35 & 20 & 30 \
\text { over 40 years of age } & 20 & 30 & 35
\end{array}$

If one of the 255 subjects is randomly selected, find the probability that the person is over 40 years of age.
A) $\frac { 1 } { 3 }$
B) $\frac { 3 } { 5 }$
C) $\frac { 1 } { 2 }$
D) $\frac { 2 } { 5 }$

Quizplus · Accepted Answer

The probability that the person is over 40 years of age is the number of people over 40 years of age divided by the total number of subjects. There are 20 + 30 + 35 = 85 people over 40 years of age, and there are 255 subjects in total. Therefore, the probability that the person is over 40 years of age is 85/255 = 1/3.

Find the Indicated Probability If One of the 255 Subjects Is Randomly Selected, Find