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August 26th, 2013, 12:45 PM   #1
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Simple Probability Question

Let

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?
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August 26th, 2013, 02:56 PM   #2
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Re: Simple Probability Question

X ? x-1 is equivalent to X < x, when x and X are integers.

The teacher is quibbling.
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August 26th, 2013, 03:02 PM   #3
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Re: Simple Probability Question

Alright, thanks!
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