For the standard normal distribution, find the area between -1.55 and 1.90.
P(−1.55<z<1.90)=P(0<z<−1.55)+P(0<z<1.90)=0.4394+0.4713=0.9107P(-1.55<z<1.90)\\ =P(0<z<-1.55)+P(0<z<1.90)\\ =0.4394+0.4713=0.9107P(−1.55<z<1.90)=P(0<z<−1.55)+P(0<z<1.90)=0.4394+0.4713=0.9107
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