Mathematics (AS & A Level) · May / June 2026 · Paper 62 · Question 2
9709
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Each week, Birgitte takes three train journeys. The times, in minutes, for these journeys have the independent distributions N( , ) A 28 15 + , N( , ) B 23 8 + and N( , ) C 99 24 + . For a randomly chosen week, find P( ( )) C A B 2 2 + . [5]
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