Given that z is a standard normal random variable, a negative value of z indicates that the standard deviation of z is negative.

Name: Given that z is a standard normal random variable, a negative value of z indicates that the standard deviation of z is negative.
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Quizplus · Accepted Answer

A negative value of z simply means that the observed value is below the mean of the standard normal distribution. The standard deviation of z is always positive and equal to 1.

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