The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 56 ounces and a standard deviation of 7 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 49 and 77 ounces?
%
c) What percentage of the widget weights lie above 42 ?
%
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