Consider the statistics of two sets of observations as \( \mathrm{P...

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Consider the statistics of two sets of observations as
\( \mathrm{P} \) follows:

W
\begin{tabular}{|c|c|c|c|}
\hline & Size & Me an & Variance \\
\hline Obse rvation I & 10 & 2 & 2 \\
\hline Observation II & \( \mathrm{n} \) & 3 & 1 \\
\hline
\end{tabular}
If the variance of the combined set of these two observations is \( \frac{17}{9} \), then the value of \( n \) is equal to
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