OCR MEI Paper 2 2021 November — Question 5

Exam BoardOCR MEI
ModulePaper 2 (Paper 2)
Year2021
SessionNovember
TopicBinomial Distribution
TypeDirect binomial probability calculation

5 It is known that 40\% of people in Britain carry a certain gene.
A random sample of 32 people is collected.
  1. Calculate the probability that exactly 12 people carry the gene.
  2. Calculate the probability that at least 8 people carry the gene, giving your answer correct to \(\mathbf { 3 }\) decimal places.