The Acme Company manufactures widgets.The distribution of widget weights is bell-shaped.The widget weights have a mean of 39 ounces and a standard deviation of 6 ounces.

Using the Empirical Rule,

i) 68.2% of the widget weights lie betweenand.

ii)What percentage of the widget weights lie between 21 and 45 ounces?

Empirical Rule (also called 68-95-99.7 Rule) 34.1% 34.1% 2.1% 2.1% 13.6% 13.6% -3s -25 -1s mean +1s +2s +3s