Question 7 - A-Level Maths

Exam Board	OCR
Module	S1 (Statistics 1)
Year	2012
Session	January
Topic	Binomial Distribution
Type	Identify distribution and parameters

State a suitable distribution that can be used as a model for \(X\), giving the value(s) of any parameter(s). State also any necessary condition(s) for this distribution to be a good model. Use the distribution stated in part (i) to find
\(\mathrm { P } ( X = 4 )\),
\(\mathrm { P } ( X \geqslant 4 )\).