Given that Z is a standard normal random variable,a negative value (z)on its distribution would indicate:
A)z is to the left of the mean.
B)the standard deviation of this Z distribution is negative.
C)the area between zero and the value z is negative.
D)None of these choices.

Question

Quizplus · Accepted Answer

Z is a standard normal distribution with mean 0 and standard deviation 1. Therefore, a negative value (z) would indicate that it falls to the left of the mean (which is at 0). Choice B is incorrect because the standard deviation cannot be negative. Choice C is also incorrect because the area between zero and the value z is always positive, regardless of whether z is positive or negative.

Given That Z Is a Standard Normal Random Variable,a Negative