9709/63

Mathematics 9709/63October/November 2023

Cambridge A-Level · Probability & Statistics 2 · worked solutions for every part, with the mark scheme

7
questions
50
marks
75
minutes

Topics Sampling and Estimation · The Poisson Distribution · Hypothesis Tests · Linear Combinations of Random Variables · Continuous Random Variables

Q13MSampling and EstimationFree sample

A random variable XX has the distribution N(410,400)\mathrm{N}(410, 400).

Find the probability that the mean of a random sample of 36 values of XX is less than 405.

The rest of this paper

6 more questions
  • Q2Sampling and Estimation4M
  • Q3The Poisson Distribution10M
  • Q4Linear Combinations of Random Variables8M
  • Q5The Poisson Distribution · Hypothesis Tests5M
  • Q6Continuous Random Variables8M
  • Q7Hypothesis Tests · Sampling and Estimation12M
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