--- a
+++ b/Semantic Features/isNotSameTTest.m
@@ -0,0 +1,18 @@
+function [ p ] = isNotSameTTest( x1, x2, y1, y2 )
+%isNotSameTTest 'both' "means are not equal" (two-tailed test)
+%   High p -> Hnull: X1 = X2 
+%   Low  p -> Halt : X1 <> X2 
+
+%x2 should be rt. 
+x1 = round(x1); %convert to classifications
+x2 = round(x2);
+y1 = round(y1);
+y2 = round(y2);
+x1Success = (x1 == y1);
+x2Success = (x2 == y2);
+[is, p, confInt, stats] = ttest2(x1Success, x2Success, 'Vartype', 'unequal');
+
+%should change to just return is so can use as a logic test
+
+end
+