Question

a population characteristic is normally distributed. approximately what percentage of the population lies within one standard deviations of the mean? 48% 68% 95% 99%

Explanation:

Step1: Recall empirical rule

For a normal - distribution, the empirical rule states certain percentages of data within specific standard - deviation ranges from the mean.

Step2: Identify percentage within one standard deviation

Approximately 68% of the data in a normal distribution lies within one standard deviation of the mean.

Answer:

B. 68%