1)The percentage of data which lies between the mean and 3 standard deviations above the mean.2)The percentage of data which lies between 1 standard deviation below the mean to 2 standard deviations above the mean.3)The percentage of data which lies above 1 standard deviation below the mean.B) Now evaluate these same probabilities exactly using NumWorks.1)he percentage of data which lies between the mean and 3 standard deviations above the mean.2)The percentage of data which lies between 1 standard deviation below the mean to 2 standard deviations above the mean.3)The percentage of data which lies above 1 standard deviation below the mean.

The Empirical Rule ( or the 168 - 95 - 99. 7 rule) 99. 7% For N : 31 and 8 = 4 find P (23 2 x ( 27 ) using the Empirical Rule. |~ ~ 95%- 23 27 31 47.5%% - 34 % = 13.50 P (23 6 * 6 27 ) =. 135 49.85- Exact prob from Numworks. com . 1359