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Cookies are made in a factory with an average mass of 22 grams and a standard deviation of 4 grams. some cookies are packed in a box. According to the manufacturer, the average mass of a cookie from at least 99% of the boxes is at least 20 grams. How many cookies should the manufacturer at least put in a box?
5 years ago

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oobleck
You can play around with Z table stuff at
http://davidmlane.com/hyperstat/z_table.html
5 years ago

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