A random variable \( X \) has the following probability distribution : \begin{tabular}{|c|c|c|c|...

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A random variable \( X \) has the following probability distribution :
\begin{tabular}{|c|c|c|c|c|c|c|}
\hline\( x_{i} \) & \( -2 \) & \( -1 \) & 0 & 1 & 2 & 3 \\
\hline\( p_{i} \) & \( 0.1 \) & \( k \) & \( 0.2 \) & \( 2 k \) & \( 0.3 \) & \( k \) \\
\hline
\end{tabular}
Find the value of \( k \).
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