9709/52 · Feb/March 2025
Probability & Statistics 1 · 50 marks · 6 questions
- Question 16 marks
Distribution of heads from three biased coins, then the variance.
- Question 29 marks
Binomial probabilities and a normal approximation.
- Question 39 marks
Draw a cumulative frequency graph, estimate from it and estimate a grouped mean.
- Question 47 marks
Choosing toy cars without replacement: same-colour and mixed-colour probabilities.
- Question 59 marks
Normal probabilities, a standard deviation from a percentage, and the first day an event happens.
- Question 610 marks
Arrangements and selections of books with restrictions.