Question 465364
 Find the t values that form the boundaries of the critical region for a two-tailed test with a α = 0.5 for each of the following df values.
a) df = 8
invT(0.025,8) = +/-2.306 
--------------------
b) df = 15
invT(0.025,15) = +/-2.1314
--------------------
c) df = 24
invT(0.025,24) = +/-2.0639
================================
Cheers,
Stan H.