Given that Z is a standard normal random variable, the area to the left of a value z is expressed as:
A) P ( Z \geq z
B) P ( Z \leq z )
C) P ( 0 \leq Z \leq z )
D) P ( Z \geq - Z )

Question

Given that Z is a standard normal random variable, the area to the left of a value z is expressed as: 
A)  P ( Z \geq z 
B)  P ( Z \leq z )
C)  P ( 0 \leq Z \leq z ) 
 D)  P ( Z \geq - Z )

Quizplus · Accepted Answer

The area to the left of a value z represents the probability that a standard normal random variable is less than or equal to z. This is expressed as P ( Z ≤ z).

Given That Z Is a Standard Normal Random Variable, the Area