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Probability Question

Probability Question

Probability Question

(OP)
This is one I should know, but for some reason it is just slipping my mind....

I am looking at a packaging operation.  I recently did some random sampling and counted how many pieces of a specific part were in each bag.  I looked at 101 bags.  The number of parts in each bag ranged from 0 to 5 pieces and a mean of 2.33 pieces.  If there are 0 parts in a bag, then my company would consider the part as failed.  

Here's the question.  If I found only 1 bag with 0 parts, do I consider the probability of finding a failed part as (1/101) or do I use the poisson distribution with a mean of 2.33 and calculate the probability of finding 0 pieces that way?

Thanks.   

RE: Probability Question

Yes, I would treat this as a Poisson distribution.  

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