Mathematics (AS & A Level) · May / June 2025 · Paper 63 · Question 5
9709
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In Urberia, the masses, in kilograms, of men have the distribution N(70.3, .5 92). A certain footbridge in Urberia can take a maximum safe load of 1500 kg. When n men stand on the bridge, the probability that the bridge is unsafe is less than 0.01. Stating a necessary assumption, find the maximum value of n. [4]
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