t Distribution for Hypothesis Testing
Table
values Ð mathematically derived
theoretical distribution values
1.Significance
level Ð setting the a
na is
probability (p) value Ð (.05, .01, .001) - .05 = 5 (out of 100)
n.p < a - reject H0, accept H1 (this is statistically
significant)
n.p > a - accept H0, reject H1 (this is NOT
statistically sig)
2.Rejection
Region
nreject H0 if X significantly different from m (IV had
affect)
nIf df not in table Ð
use next lower
nt .05 (14 df)obs = 3.862 ³ t .05 (14 df)tab = 2.145 (reject H0)
nt .05 (14 df)obs = 1.789 ² t .05 (14 df)tab = 2.145 (accept H0)
