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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 61 ounces and a standard deviation of 3 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 58 and 70 ounces? %

c) What percentage of the widget weights lie above 55 ? %

Math   Statistics-And-Probability   
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