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December 16th, 2009, 04:06 PM   #1
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Probability (Poisson)

A machine on average produces 4 defective items out of a batch of 100 items.
Find the probability that a batch of 50 items has 3 defective items in it using the Poisson probability distribution.

the problem is..
i just want to know the mean or average value for batch of 50 items..
i got mean = 2
because for 100 items, the mean is 4..
............for 50 items, the mean would be 2..
correct?
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December 17th, 2009, 01:14 PM   #2
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Re: Probability (Poisson)

yes.
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