one tailed test

[pacmandefense]

assume 46 observations, 2 slopes, 1% significance level.
H0: intercept >= -10%
HA: intercept
Thus, we have a one tailed test with n-k-1 = 46-3=43 DOF. The critical t value from the T table is +2.416.
The t-stat is given as -0.96.
Now, I am not exactly sure from this point on. What is the rule for a 1 tailed Ttest? I know what it is for a two tailed T-test….
The answer was we DO NOT REJECT null because the t-stat was less than -2.416. Why are we looking at the negative critical value if it is a one tailed test?

 

[GETMCKINLEYLAID]

I have not begun studying again yet, but I believe that to test the validity of the results it is based on absolute value of the t-stat so sign is not relevant in that vain, but it is relevant in the fact that +/- signs show correlation to the dependent variable. i.e. if the t is positive then the dependent will go up with an increase in the indie, and if its negative it will go down with an increase in the indie.

 

[idreesz]

Because H0 dealt with a negative number to begin with. If it is negative and a one tailed test then you will need to take the critical t value as negative and go from there. Any number less than -2.416 will mean that your fail to reject the null hypothesis.