OCR Further Statistics AS 2018 June — Question 5

Exam BoardOCR
ModuleFurther Statistics AS (Further Statistics AS)
Year2018
SessionJune
TopicBinomial Distribution
TypeDirect binomial probability calculation

5
  1. A team of 9 is chosen at random from a class consisting of 8 boys and 12 girls.
    Find the probability that the team contains no more than 3 girls.
  2. A group of \(n\) people, including Mr and Mrs Laplace, are arranged at random in a line. The probability that Mr and Mrs Laplace are placed next to each other is less than 0.1 . Find the smallest possible value of \(n\).