According to the empirical rule approximately what percentag

According to the empirical rule, approximately what percentage of the area under a normal distribution lies within 1 standard deviation? % Within 2 standard deviations? % Within 3 standard deviations? %

Solution

using empirical rule, 68% lies within 1 std dev, 95% in 2, and 99.7% within 3 standard deviations of the mean.