9709/52 · Oct/Nov 2025
Probability & Statistics 1 · 50 marks · 7 questions
- Question 13 marks
Geometric distribution: first head on, or after, a given throw.
- Question 27 marks
Probability distribution from selections without replacement, and its variance.
- Question 37 marks
Normal distribution: expected numbers in a range and a standard deviation from a percentage.
- Question 47 marks
Two groups: find an unknown from a ratio, then the probability two cards match.
- Question 57 marks
Draw a histogram and estimate the mean of grouped data.
- Question 69 marks
Binomial probabilities and a normal approximation for birthdays.
- Question 710 marks
Arrangements of letters with restrictions, and choosing two different letters.