function [ p ] = isNotGreaterTTest( x1, x2, y1, y2 )

%isGreaterTTest "mean of X1 is greater than mean of X2"

%   High p -> Hnull: X1 = X2 (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, 'tail', 'right', 'Vartype', 'unequal');

%[is, p, confInt, stats] = ttest2(x1Success, x2Success, 0.01, 'right', 'unequal'); %for older matlab versions

%should change to just return is so can use as a logic test

end