1                      Two Sample Paired t-test for the Means of PGO and PGG                    
 
 
-    Sample Statistics
 
0         Group          N      Mean    Std. Dev.   Std. Error
          ----------------------------------------------------
          PGO           21  1.927445      1.5467       0.3375
          PGG           21  0.864251      0.6288       0.1372
 
 
-    Hypothesis Test
 
0         Null hypothesis:    Mean of (PGO - PGG) <= 0
          Alternative:        Mean of (PGO - PGG) >  0
 
0              t Statistic      Df      Prob > t
               ---------------------------------
                  3.984         20       0.0004
 
 
-    Power Analysis
 
0                               Sample          Observed
                Alpha            Size             Power
                -----            ----             -----
                0.050              21             0.986