AQA AS Paper 2 2024 June — Question 14

Exam BoardAQA
ModuleAS Paper 2 (AS Paper 2)
Year2024
SessionJune
TopicBinomial Distribution
TypeFinding binomial parameters from properties

14 The discrete random variables \(X\) and \(Y\) can be modelled by the distributions $$\begin{gathered} X \sim \mathrm {~B} ( 40 , p )
Y \sim \mathrm {~B} ( 25,0.6 ) \end{gathered}$$ It is given that the mean of \(X\) is equal to the variance of \(Y\) 14
  1. Find the value of \(p\)
    14
  2. \(\quad\) Find \(\mathrm { P } ( Y = 17 )\)