If Z is a standard normal random variable, the area between z = 0.0 and z =1.30 is 0.4032, while the area between z = 0.0 and z = 1.50 is 0.4332. What is the area between z = -1.30 and z = 1.50?
A) 0.0300 .
B) 0.0668 .
C) 0.0968 .
D) 0.8364 .

Question

If Z is a standard normal random variable, the area between z = 0.0 and z =1.30 is 0.4032, while the area between z = 0.0 and z = 1.50 is 0.4332. What is the area between z = -1.30 and z = 1.50?  
A)  0.0300 . 
B)  0.0668 . 
C)  0.0968 .
D)  0.8364 .

Quizplus · Accepted Answer

The area between z = -1.30 and z = 1.50 is the sum of the areas from z = 0 to z = 1.30 and z = 0 to z = 1.50, which is 0.4032 + 0.4332 = 0.8364.

If Z Is a Standard Normal Random Variable, the Area