$\begin{array} { c c }
\hline \text { Age } & \text { Probability } \
\hline \text { 30 years } & 1 / 4 \
\text { 40years } & 1 / 4 \
\text { 50 years } & 1 / 4 \
\text { 60years } & 1 / 4 \
\hline
\end{array}$
-Refer to Exhibit 6-1 for the probability distribution for four different ages that are spread equally throughout a hypothetical population. What is the expected age of the next person to walk into the classroom?

Question

$\begin{array} { c c } 
\hline \text { Age } & \text { Probability } \
\hline \text { 30 years } & 1 / 4 \
\text { 40years } & 1 / 4 \
\text { 50 years } & 1 / 4 \
\text { 60years } & 1 / 4 \
\hline
\end{array}$
-Refer to Exhibit 6-1 for the probability distribution for four different ages that are spread equally throughout a hypothetical population. What is the expected age of the next person to walk into the classroom?

Quizplus · Accepted Answer

The expected age is calculated by multiplying each age by its probability and summing these products: $(30 \times \frac{1}{4}) + (40 \times \frac{1}{4}) + (50 \times \frac{1}{4}) + (60 \times \frac{1}{4}) = 45$.

-Refer to Exhibit 6-1 for the Probability Distribution for Four