In testing the hypothesis:

$H_0: \beta_1 = 0$

$H_0: \beta_1 \not= 0$

the following statistics are available:

$n = 175,\quad b_0 = -4.19,\quad b_1 = 5.15,\quad s_{b_1} = 1.37,\quad \hat{y} = 12$

Determine the value of the test statistic.

Test Statistic =