Question 2 - A-Level Maths

Exam Board	Edexcel
Module	S1 (Statistics 1)
Year	2013
Session	June
Topic	Cumulative distribution functions
Type	Discrete CDF to PMF

2．The discrete random variable \(X\) takes the values 1,2 and 3 and has cum
function \(\mathrm { F } ( x )\) given by

\(x\)	1	2	3
\(\mathrm {~F} ( x )\)	0.4	0.65	1

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