Cambridge A Level Mathematics 9709 — 2013 Oct/Nov Paper 7 · Variant 3
9709/73/O/N/13 · 1 question · 50 marks · ≈56 min
The question paper and its mark scheme, free to read here and free to download. This is Cambridge’s own paper, exactly as it was sat.
Question paper4 pages
Mark scheme6 pages
Answers below. Sit the paper first if you are practising.
Questions as text
Q1 · A random sample of 80 values of a variable X is taken and these values are summarised…
1 A random sample of 80 values of a variable X is taken and these values are summarised below. n = 80 Σ x = 150.2 Σ x2 = 820.24 Calculate unbiased estimates of the population mean and variance of X and hence find a 95% confidence interval for the population mean of X. [6]
Mark scheme: 1 4 6 10 100(= 25t −t = ) 2500 6 0 3 16 100 2 M1 For E ( T2 ) – ( E ( T ) )2 )“ ”– ( 3 3
What was in this paper
The subtopics covered by these 1 questions, and how many questions each got. Open one in a new tab to see every Cambridge question on it.
What you needed in this session
Cambridge’s own grade thresholds for 2013 Oct/Nov, Paper 7 · Variant 3. A higher threshold means an easier paper — the bar moves with how the cohort did.