The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 43 ounces and a standard deviation of 4 ounces.

Use the Standard Deviation Rule, also known as the Empirical Rule.

Suggestion: sketch the distribution in order to answer these questions.

a) 99.7% of the widget weights lie between_________________ and______________

b) What percentage of the widget weights lie between 35 and 55 ounces?_____________%

c) What percentage of the widget weights lie above 39 ?___________________%