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ChidoriPOWAA August 26th, 2013 01:45 PM

Simple Probability Question

I want to find the smallest integer x so that .

I started like this:

but here the teacher's answer said:

Why is this better? Is it because the Poisson distribution is discrete? Or is there something arithmetically I've missed?

mathman August 26th, 2013 03:56 PM

Re: Simple Probability Question
X ? x-1 is equivalent to X < x, when x and X are integers.

The teacher is quibbling.

ChidoriPOWAA August 26th, 2013 04:02 PM

Re: Simple Probability Question
Alright, thanks!

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