A random variable x has the following probability distribution:
$$\begin{array} { c c }
x &fx) \
0 & .08 \
1 & .17 \
2 & .45\
3 & .25 \
4 & .05
\end{array}$$
a. Determine the expected value of x.
b. Determine the variance.

Question

A random variable x has the following probability distribution:
 $$\begin{array} { c c } 
x &fx) \
0 & .08 \
1 & .17 \
2 & .45\
3 & .25 \
4 & .05
\end{array}$$ 
a. Determine the expected value of x.
b. Determine the variance.

Quizplus · Accepted Answer

The Answer of A random variable x has the following probability distribution:
 $$\begin{array} { c c } 
x &fx) \
0 & .08 \
1 & .17 \
2 & .45\
3 & .25 \
4 & .05
\end{array}$$ 
a. Determine the expected value of x.
b. Determine the variance.

A Random Variable X Has the Following Probability Distribution xfx)0.081.172.453.254.05\begin{array} { c c } x &fx) \\0 & .08 \\1 & .17 \\2 & .45\\3 & .25 \\4 & .05\end{array}x01234​fx).08.17.45.25.05​

A Random Variable X Has the Following Probability Distribution $\begin{array} { c c } x &fx) \\0 & .08 \\1 & .17 \\2 & .45\\3 & .25 \\4 & .05\end{array}$