What is the proportion of the area of region between z =1 and z=
2
P(Z=2)−P(Z=1)P(Z=2)-P(Z=1)P(Z=2)−P(Z=1)
=0.9772−0.8413=0.9772-0.8413=0.9772−0.8413
=0.1359=0.1359=0.1359
=13.59=13.59%=13.59 %
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