About ______ of z-scores in the standard normal distribution are within ______ standard deviations of the mean.
A) half; ±3
B) two-thirds; ±1
C) 95%; ±1
D) 99%; ±2

Name: About ______ of z-scores in the standard normal distribution are within ______ standard deviations of the mean. A) half; ±3 B) two-thirds; ±1 C) 95%; ±1 D) 99%; ±2
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Question

Quizplus · Accepted Answer

In a standard normal distribution, approximately two-thirds (or about 68%) of z-scores fall within ±1 standard deviation of the mean.

About ______ of Z-Scores in the Standard Normal Distribution Are