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Mathematics 31 Online
OpenStudy (anonymous):

Cans of drink are packed in boxes, each containing 4 cans. The weights of these cans are normally distributed with mean 510 g and standard deviation 14 g. The weights of the boxes, when empty, are independently normally distributed with mean 200 g and standard deviation 8 g. (i) Find the probability that the total weight of a full box of cans is between 2200 g and 2300 g.

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