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Find the value of $p$.
Mathematics 9709 · AS & A Level · The Poisson distribution
The Poisson distribution — practice question
The discrete random variable $X$ can take only the values $1, 4, 5, 7$ and $9$. The table shows the probability distribution of $X$.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Adding the five probabilities to $1$ and arriving at $10p^2+19p-2=0$” …
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