Mathematics (AS & A Level) · May / June 2017 · Paper 71 · Question 5
9709
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Large packets of sugar are packed in cartons, each containing 12 packets. The weights of these packets are normally distributed with mean 505 g and standard deviation 3.2 g. The weights of the cartons, when empty, are independently normally distributed with mean 150 g and standard deviation 7 g.
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5(i)[5]
5(ii)[5]
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