What percent of a standard normal distribution is found in each region below? Be sure to draw a graph
a) Z>-1.59
b) -0.4<z<1.8
Part a)
P ( Z > -1.59 ) = 1 - P ( Z < -1.59 )
P ( Z > -1.59 ) = 1 - 0.0559
P ( Z > -1.59 ) = 0.9441
Part b)
P ( -0.4 < Z < 1.8 ) = P ( Z < 1.8 ) - P ( Z < -0.4
)
P ( -0.4 < Z < 1.8 ) = 0.9641 - 0.3446
P ( -0.4 < Z < 1.8 ) = 0.6195
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