In any SYMMETRICAL and BELLSHAPED distribution namely the No

In any SYMMETRICAL and BELL-SHAPED distribution (namely the Normal Probability Distribution), the EMPIRICAL RULE states approximately: _____% of the observed data fall within one standard deviation of the mean: ( - , + )

Do not include % sign; that is, for 0.1210 or 12.1%, put 12.1. Give answer accurate to at least three decimals or the first decimal in terms of percentages.

Solution

the EMPIRICAL RULE states approximately 68% of the observed data fall within one standard deviation of the mean: ( - , + )