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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.
xP(x) 00.250.45150.05250.3\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

Correct Answer:

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