For a standard normal distribution, a negative value of z indicates _____.
A) a mistake has been made in computations, because z is always positive
B) the area corresponding to the z is negative
C) the z is to the left of the mean
D) the z is to the right of the mean

Question

Quizplus · Accepted Answer

A negative value of z indicates that the observation is to the left of the mean, which is defined as z = 0 in a standard normal distribution. A negative z value does not indicate a mistake in computations, as z can be negative or positive. The area corresponding to the z value is always positive, as it represents the area under the curve of the normal distribution.

For a Standard Normal Distribution, a Negative Value of Z