Given that z is a standard normal random variable and that the area to the right of z is 0.1949,then the value of z must be:
A) 0.51.
B) -0.51.
C) 0.86.
D) -0.86.

Question

Quizplus · Accepted Answer

The area to the right of z corresponds to the complement of the area to the left of z, which is given by the standard normal distribution table as 1 - 0.1949 = 0.8051. Looking up this area in the table, we find that the corresponding z-score is approximately 0.86. Therefore, the answer is C.

Given That Z Is a Standard Normal Random Variable and That