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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}

Question 43

Short Answer

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}
a. Determine the expected value of x.
b. Determine the variance.

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