(1) Z=0.5时,S=0.6915 Z=2.8时,S=0.9947
S差=0.9947-0.6915=0.3032
(2) Z=0时,S=0.5 Z=1.4时 S=0.9192
S差=0.9192-0.5 =0.4192
(3) Z=-1.5时S=1-0.9332=0.0668 Z=1.8时S=0.9641
S差=0.9641-0.0668=0.8973
(4) Z=-0.5 S=0.3085 Z=1.88
S=0.9700
S差=0.9700-0.3085=0.6615
(5) Z=-2.5 S=0.0062 Z=0.8
S=0.7781
S差=0.7881-0.0062=0.7819