According to the empirical rule,if the data form a "bell-shaped" normal distribution,________ percent of the observations will be contained within 3 standard deviations around the arithmetic mean.
A)68.26
B)75.00
C)99.7
D)95.0

Question

Quizplus · Accepted Answer

The empirical rule states that approximately 68% of the observations will be within one standard deviation of the mean, approximately 95% will be within two standard deviations of the mean, and approximately 99.7% will be within three standard deviations of the mean. Therefore, the best choice is C, which corresponds to 99.7%.

According to the Empirical Rule,if the Data Form a "Bell-Shaped