Question: Leiram tries another model, adding the variable Age to see if that improves the model: Response Variable: Respond Amount (R^{2}=91.50 %:) Adjusted (R^{2}=91.23 %) (s_{e}=18.179)

Leiram tries another model, adding the variable Age to see if that improves the model:
Response Variable: Respond Amount
$R^{2}=91.50 \%:$ Adjusted $R^{2}=91.23 \%$
$s_{e}=18.179$ with $149-5=144$ degrees of freedom

Variable Coeff SE(Coeff) t-ratio P-value Intercept 114.91 9.244 12.439

QUESTION:

Has the variable Age improved the model? Would you leave the term in? Comment.

Variable Coeff SE(Coeff) t-ratio P-value Intercept 114.91 9.244 12.439

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