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A-LevelMathematicsProbability and statisticsOct/Nov 2024Paper 6 Q36 Marks

The times, T minutes, taken by a random sample of 75 students to complete a test were noted. The results were summarised by Σt = 230 and Σt² = 930. You should now assume that your estimates from part (a) are the true values of the population mean and variance of T.

Q: What topic does this question test?

This question tests Probability and statistics in A-Level Mathematics (syllabus code 9709). It is worth 6 marks.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Mathematics Question

Topic

This structured question tests Probability and statistics in A-Level Mathematics (syllabus code 9709). It is worth 6 marks.

Source

This question appeared in the Cambridge A-Level Mathematics Oct/Nov 2024 examination, Paper 6 Variant 1.

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