within 1 interval the probability of 0 event happens is e^-Λ (e to the negative lambda)

so within x intervals the probability of 0 event happens is e^-Λx

so the cumulative probability of the first event happens within x intervals is 1-e^-Λx

Then take the derivative of that we get f(x) = Λe^-Λx ]]>

I’m also struggling to seeing a what’s special about MSE and MSB. Any insights?

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