Compute the Mean of the Random Variable with the Given $\begin{array} { c c } \hline x & P ( x ) \\\hline 0 & 0.2 \\15 & 0.05 \\25 & 0.45 \\30 & 0.3 \\\hline\end{array}$

question 7

Multiple Choice

Compute the mean of the random variable with the given discrete probability distribution.
$\begin{array} { c c } \hline x & P ( x ) \\\hline 0 & 0.2 \\15 & 0.05 \\25 & 0.45 \\30 & 0.3 \\\hline\end{array}$

• A) 11.0
• B) 121.5
• C) 21
• D) 17.5

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