If z is a standard normal random variable, the area between z = 0.0 and z = 1.20 is 0.3849, while the area between z = 0.0 and z = 1.40 is 0.4192. What is the area between z = -1.20 and z = 1.40?
A) 0.0343
B) 0.0808
C) 0.1151
D) 0.8041

Question

Quizplus · Accepted Answer

The area between z = -1.20 and z = 1.40 is the sum of the areas from z = 0 to z = 1.20 and from z = 0 to z = 1.40, which is 0.3849 + 0.4192 = 0.8041.

If Z Is a Standard Normal Random Variable, the Area