Q2c) t-Test of the Coefficients

=

=

Degrees of Freedom (Residual):

:

(Income does not significantly affect voter intent.)

:

(Income significantly affects voter intent.)

Critical Value

For and , the critical values of t from the table are .

Decision Rule

Reject if the calculated t-value is greater than 2.626 or less than -2.626.

Since the calculated t-value (t = 2.2799) is less than 2.626, we fail to reject the null hypothesis.

This suggests that income does not significantly affect voter intent at the 1% significance level.