Edexcel S2 — Question 6

Exam BoardEdexcel
ModuleS2 (Statistics 2)
TopicApproximating the Binomial to the Poisson distribution
TypeState conditions for Poisson approximation

6. A shop receives weekly deliveries of 120 eggs from a local farm. The proportion of eggs received from the farm that are broken is 0.008
  1. Explain why it is reasonable to use the binomial distribution to model the number of eggs that are broken in each delivery.
  2. Use the binomial distribution to calculate the probability that at most one egg in a delivery will be broken.
  3. State the conditions under which the binomial distribution can be approximated by the Poisson distribution.
  4. Using the Poisson approximation to the binomial, find the probability that at most one egg in a delivery will be broken. Comment on your answer.