A Multiple Regression Model Has Three Independent Variables $\hat { Y }$

A multiple regression model has three independent variables.The following values of y and $\hat { Y }$ are given: $$\begin{array} { | l | l l l l l l l l l l | } \hline y & 40.60 & 39.40 & 38.80 & 70.60 & 49.50 & 25.50 & 52.30 & 46.40 & 56.60 & 47.40 \\\hat { y } & 47.07 & 44.50 & 41.09 & 50.16 & 54.52 & 36.25 & 53.67 & 53.51 & 40.20 & 46.14 \\\hline\end{array}$$ Compute the multiple standard error of the estimate.