Mathematics (AS & A Level) · May / June 2025 · Paper 51 · Question 4
9709
As printed in the paper
The question as text
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.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
4(a)[4]
4(b)[3]
4(c)[5]
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