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Poisson Distribution

Where did the 0.85 come from for question 2 iv A ?

Question 2iv A and Answer :http://mei.org.uk/files/papers/S2_2016_June.pdf
Original post by esmeralda123
Where did the 0.85 come from for question 2 iv A ?

Question 2iv A and Answer :http://mei.org.uk/files/papers/S2_2016_June.pdf


It's wrong and doesn't give the answer they have written.

It should be e6×622!=0.0446\frac{e^{-6} \times 6^2}{2!}=0.0446.

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