For a data set with n = 250, we assume the data are normally distributed.

Based on this assumption, how many values would fall within 1 sigma of the mean value? . Round to the nearest integer value.

How many values would fall within 2 sigma of the mean value? . Round to the nearest integer value.

How many values would fall within 3 sigma of the mean value? . Round to the nearest integer value.

(Based on the Empirical Rule for the Normal Distribution)