Analyze the regression model in LISREL-SIMPLIS using the covariance matrix below with a sample size of 23 as described in Jöreskog and Sörbom (1993, pp. 3-6). The theoretical regression model specifies that the dependent variable, gross national product (GNP), is predicted by labor, capital, and time (three independent variables).
Covariance Matrix
$$
\begin{array}{lrrrr}
\hline \text { GNP } & 4256.530 & & & \\
\text { Labor } & 449.016 & 52.984 & & \\
\text { Capital } & 1535.097 & 139.449 & 1114.447 & \\
\text { Time } & 537.482 & 53.291 & 170.024 & 73.747
\end{array}
$$