The Following Is Part of the Results of a Regression

question 88

Essay

The following is part of the results of a regression analysis involving sales (y in millions of dollars), advertising expenditures (x₁ in thousands of dollars), and number of salespeople (x₂) for a corporation: $$\begin{array}{l}\text { ANOVA }\\\begin{array} { l l l l l } \text { Source } & d f & S S & M S & F \\\text { Regression } & 2 & 822.088 & \\\text { Error } & 7 & 736.012 &\end{array}\end{array}$$ ​
a.
At α = .05, test to determine if the model is significant. That is, determine if there exists a significant relationship between the independent variables and the dependent variable.
b.
Determine the multiple coefficient of determination.
c.
Determine the adjusted multiple coefficient of determination.
d.
What has been the sample size for this regression analysis?