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April 18, 2014

Homework Help: statistics

Posted by V on Wednesday, November 7, 2012 at 3:59pm.

An automatic machine that fills bags of unpopped popcorn is operating properly if the weights are independently and normally distributed with a mean of 114 grams and a standard deviation of 4.9 grams. Find the probability that if 7 bags are randomly selected, their mean weight exceeds 115 grams.

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