
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
December 1st, 2009, 11:49 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, 01:21 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,822 Thanks: 723  Re: simple probability question Quote:
Step 2: Calculate prob. of not working for each tool, call them P, Q, R. Step 3: Prob. all still working is 1PQR.  

Tags 
probability, question, simple 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Simple Probability Question  ChidoriPOWAA  Probability and Statistics  2  August 26th, 2013 03:02 PM 
simple probability question  giankar  Advanced Statistics  1  December 1st, 2009 01:36 PM 
simple probability question  aneuryzma  Algebra  2  September 13th, 2009 10:36 PM 
Simple Probability Question  slade8200  Algebra  1  September 12th, 2008 01:06 PM 
simple probability question  The_Master  Algebra  4  April 6th, 2007 02:15 PM 