The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 54 ounces and a standard deviation of 11 ounces. Use the Standard Deviation...

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 54 ounces and a standard deviation of 11 ounces.


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


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

i&ii) 99.7% of the widget weights lie between  and

iii) What percentage of the widget weights lie between 43 and 87 ounces?  % (answer as a whole number)


iv) What percentage of the widget weights lie below 76 ?  % (answer as a whole number)