$$\begin{array}{l}
\text { Find the mean of the distribution shown. }\
\begin{array} { | l | c | c | c | }
\hline \mathrm { x } & 2 & 3 & 4 \
\hline \mathrm { P } ( \mathrm { x } ) & 0.37 & 0.24 & 0.39 \
\hline
\end{array}
\end{array}$$
A) 1.52
B) 2.02
C) 2.52
D) 3.02

Question

$$\begin{array}{l}
\text { Find the mean of the distribution shown. }\
\begin{array} { | l | c | c | c | } 
\hline \mathrm { x } & 2 & 3 & 4 \
\hline \mathrm { P } ( \mathrm { x } ) & 0.37 & 0.24 & 0.39 \
\hline
\end{array}
\end{array}$$
A) 1.52
B) 2.02
C) 2.52
D) 3.02

Quizplus · Accepted Answer

The mean of a probability distribution is calculated as $\mu = \sum x \cdot P(x)$. Here, $\mu = 2 \cdot 0.37 + 3 \cdot 0.24 + 4 \cdot 0.39 = 0.74 + 0.72 + 1.56 = 3.02$.

A) 152 B) 2

A) 152
B) 2