11. A person has 100,000 yuan and plans to invest in real estate or buy stocks. If a decision is made based on the profit table (Table 1), then the reasonable investment plan should be $\qquad$ .
Table 1
\begin{tabular}{|c|c|c|c|}
\hline & Probability of Profit & \begin{tabular}{c} 
Buying Stocks \\
Profit
\end{tabular} & \begin{tabular}{c} 
Investing in Real Estate \\
Profit
\end{tabular} \\
\hline Huge Success & 0.3 & 100,000 yuan & 80,000 yuan \\
\hline Moderate Success & 0.5 & 30,000 yuan & 40,000 yuan \\
\hline Failure & 0.2 & -50,000 yuan & -40,000 yuan \\
\hline
\end{tabular}
II. 11. Invest in Real Estate.
The expected profit from buying stocks is
$$
0.3 \times 10 + 0.5 \times 3 + 0.2 \times (-5) = 3.5 \text{ (ten thousand yuan) } \text{.}
$$

The expected profit from investing in real estate is
$$
0.3 \times 8 + 0.5 \times 4 + 0.2 \times (-4) = 3.6 \text{ (ten thousand yuan) } \text{.}
$$

Therefore, the reasonable investment plan should be to invest in real estate.