A Part of the Results Obtained from a Multiple Regression $\text { ANOVA }$

Short Answer

A part of the results obtained from a multiple regression analysis is shown below. $\text { ANOVA }$
$\begin{array}{lllll} & d f & S S & M S & F \\\text { Regression } & & 384 & 48 \\\text { Error } & & & 20\\\text { total } & & 704& \end{array}$ ​
a.
How many independent variables were involved in this model?
b.
How many observations were involved?
c.
Determine the F statistic.