Question

Area under the curve
What proportion of a standard normal distribution (normal distribution with mean = 0, standard deviation = 1) is found in each region?
(Note: the numbers you see here will be slightly different than those in the textbook.)

A) Z > 1.15 0.75
B) Z < 0.21  
C) Z > 8  
D) |Z| < 0.7  

(Note that |Z| < 0.7 implies -0.7 < Z < 0.7)

Answer 1

A)
P(Z > 1.15) = 0.1251

B)
P(z < 0.21) = 0.5832

C)
P(Z > 8) = 0

D)
P(-0.7 < Z < 0.7) = 0.5161
=NORM.DIST(0.7,0,1,TRUE) - NORM.DIST(-0.7,0,1,TRUE)