Updated to 2019 Syllabus CIE A-LEVEL MATHS 9709

CIE A-LEVEL MATHEMATICS//9709 1. PAGE 2 OF 8 THE POISSON DISTRIBUTION The Poisson distribution is used as a model for the number, , of events in a given interval of space or times. It has the probability formula 𝑃( = T)= −𝜆𝜆 𝑥 𝑥! T=0,1,2,… Where is equal to the mean number of events in the given interval ................
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