Compute the Standard Deviation of the Random Variable with the Given

question 94

Multiple Choice

Compute the standard deviation of the random variable with the given discrete probability distribution.
$\begin{array}{cc}x & P(x) \\\hline 0 & 0.2 \\5 & 0.45 \\15 & 0.05 \\25 & 0.3 \\\hline\end{array}$

• A) 99.8
• B) 10.5
• C) 11.25
• D) 10.0

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