Suggested Answer:

(c) The results are nearly identical. The F statistic remains the same. It is not sadistically
     significant; p value is 0.258. Note, though , that the coefficients all appear to be significant at
     the 99% level. They provide the seasonal adjustment intercepts. For example, for the third
     quarter,

                            $1526.333 million - $334.667 million = $1191.667 million