Find \( \mu, \sigma_{x}^{2} \) and \( \sigma_{x} \) for each of the...

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Find \( \mu, \sigma_{x}^{2} \) and \( \sigma_{x} \) for each of the following probability distributions :
\begin{tabular}{|r|l|l|c|c|}
\hline \( \mathrm{X}: \) & \( -3 \) & \( -1 \) & 0 & 4 \\
\hline \( \mathrm{P}(\mathrm{X}): \) & \( 0 \cdot 2 \) & \( 0.4 \) & \( 0.3 \) & \( 0.1 \) \\
\hline
\end{tabular}
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