What is the proportion of the total area under the normal curve within plus and minus two standard deviations of the mean?
A)68%
B)99.7%
C)34%
D)95%

Question

Quizplus · Accepted Answer

The Empirical Rule states that approximately 68% of the data falls within one standard deviation of the mean, and approximately 95% falls within two standard deviations of the mean. Therefore, the answer is D, 95%.

What Is the Proportion of the Total Area Under the Normal