The Following Results Were Obtained from a Multiple Regression Analysis

Essay

The following results were obtained from a multiple regression analysis.
$\begin{array}{lcc}\text { Source of } & \text { Degrees } & \text { Sum of } & \text { Mean } \\\text { Variation } & \text { of Freedom } & \text { Squares } & \text { Square }&F\\\text { Regression } && 384 & 48 \\\text { Error } & && 20 \\\text { Total } && 704 &\end{array}$
a. How many independent variables were involved in this model?
b. How many observations were involved?
c. Determine the F statistic.