z score,probability density,z score,probability density
-2.9,0.0019,-1.0,0.1587
-2,0.0228,-0.5,0.3085
-1.5,0.0668,0,.50
-1.0,0.1587,0.5,0.3085
-0.5,0.3085,1.0,0.1587
0,.50,0,0
0.5,0.3085,0,0		
1.0,0.1587,0,0	
1.5,0.0668,0,0
2.0,0.0228,0,0
2.9,0.0019,0,0