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December 1st, 2009, 11:59 AM  #1 
Newbie Joined: Dec 2009 Posts: 2 Thanks: 0  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? 
December 1st, 2009, 01:36 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,762 Thanks: 697  Re: simple probability question
I supplied an answer in another forum


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