Probability Generating Functions (PGFs) (Edexcel A-Level Further Mathematics): Quizzes

Representing probabilities compactly

$G_X(t) = \sum_{x=0}^\infty p_x t^x$

A dummy variable

$1$

$[pt + (1-p)]^n$

$e^{\lambda(t-1)}$

$\frac{p}{1 - (1-p)t}$

$\left(\frac{p}{1 - (1-p)t}\right)^r$

$\frac{1}{x!} \frac{d^x}{dt^x} G_X(t)|_{t=0}$

$9e^{-3}$