A-LevelMathematicsProbability and statisticsMay/June 2023Paper 6 Q57 Marks
Large packets of rice are packed in cartons, each containing 20 randomly chosen packets. The masses of these packets are normally distributed with mean 1010g and standard deviation 3.4 g. The masses of the cartons, when empty, are independently normally distributed with mean 50g and standard deviation 2.0 g.
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