Code for plotting F1 against F2 for Group A's corrected values
for class productions of "hawed" versus "hod", using different
plotting characters (square (23) vs triangle (2) for "hawed" 
versus "hod") and different colors (black versus grey) for the 
distinguishers versus nondistinguishers.


Also will give histogram with filled grey versus cross-hatch 
black for durations from Awesome Group, with t-test for 
distinguishers and for non-distinguishers.