A-LevelMathematicsProbability and statisticsMay/June 2025Paper 5 Q412 Marks
Every Saturday, a particular community holds a ‘Puzzle' event to raise money for a new Leisure Centre. Competitors attempt to solve a puzzle as quickly as possible. Last Saturday, 600 competitors took part. The times taken to complete the puzzle were normally distributed with mean 32.4 minutes and standard deviation 2.5 minutes.
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