The Acme Company manufactures widgets. The distribution of
widget weights is bell-shaped. The widget weights have a mean of 58
ounces and a standard deviation of 10 ounces.
Use the Standard Deviation Rule, also known as the Empirical
Rule.
Suggestion: sketch the distribution in order to answer these
questions.
a) 95% of the widget weights lie between and
b) What percentage of the widget weights lie between 48 and 78
ounces? %
c) What percentage of the widget weights lie above 28
? %
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