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December 1st, 2009, 11:59 AM   #1
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simple probability question

Hey guys, great forum!

I've got a problem:

I own 3 tools, which have average time of life 4, 6 and 8 days (exponential distribution). How can I find the probability that these tools are working after 2 days?
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December 1st, 2009, 01:36 PM   #2
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Re: simple probability question

I supplied an answer in another forum
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