McNemar Statistical Test
McNemar
     1.0 if t[0][1] == 0 && t[1][0] == 0
     % from X2 dist otherwise
      - possibly a one tailed confidence value
MAPSSWE
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    conf = 1.0 - (2.0 * (normprob((double) (fabs(*Z_stat))) - 0.50));
            this is  a two tailed confidence level 
SIGN
    conf = compute_acc_binomial(num_b,N,0.5);
Signed Rank
    Same as mapsswe
	
The McNemar test