9709/62 · May/June 2024
Probability & Statistics 2 · 50 marks · 7 questions
- Question 15 marks
Normal approximation to a Poisson probability, with justification.
- Question 26 marks
Random sampling, unbiased estimates of mean and variance.
- Question 34 marks
Confidence level from a confidence interval for a proportion.
- Question 46 marks
Probabilities for combinations of two independent normal variables.
- Question 59 marks
Sums of independent Poisson variables and a conditional probability.
- Question 610 marks
One-tailed test of a mean, then the probability of a Type II error.
- Question 710 marks
Probability density function: a constant, the median and E(X).