Edexcel S2 2022 January — Question 1

Exam BoardEdexcel
ModuleS2 (Statistics 2)
Year2022
SessionJanuary
TopicPoisson Distribution
TypeMultiple periods with binomial structure

1 A local pottery makes cups. The number of faulty cups made by the pottery in a week follows a Poisson distribution with a mean of 6 In a randomly chosen week, the probability that there will be at least \(x\) faulty cups made is 0.1528
  1. Find the value of \(x\)
  2. Use a normal approximation to find the probability that in 6 randomly chosen weeks the total number of faulty cups made is fewer than 32 A week is called a "poor week" if at least \(x\) faulty cups are made, where \(x\) is the value found in part (a).
  3. Find the probability that in 50 randomly chosen weeks, more than 1 is a "poor week".