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The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have...

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 6 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 50 and 68 ounces?  %

c) What percentage of the widget weights lie below 74 ?  %

Math   Statistics-And-Probability   
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