Mathematics 9709 · AS & A Level · The Poisson distribution

The Poisson distribution — practice question

A fair die with faces labelled $1, 2, 2, 2, 3, 6$ is tossed. The score, $X$, is obtained by squaring the number on the upper face and then taking away $4$.
(i)[3]

Construct a table that gives the probability distribution of $X$.

(ii)[3]

Determine $\text{E}(X)$ and $\mathrm{Var}(X)$.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Any three correct $X$ values found

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