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April 25th, 2014, 11:58 AM  #1 
Newbie Joined: Apr 2014 From: UK Posts: 2 Thanks: 0  Probability of chance results
I have 2 culture plates made up 96 wells, 2 wells on each plate come up positive and the positive results match up (this being expected as plates are duplicates). What is the probability that these 4 wells came up positive and coincidentally match like this??? An explanation as to how you found your answer would be great as this has to go into my dissertation!!! Thanks Joe 
April 25th, 2014, 12:02 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,823 Thanks: 723 
A description of the underlying experiment would be helpful.

April 25th, 2014, 12:08 PM  #3 
Newbie Joined: Apr 2014 From: UK Posts: 2 Thanks: 0 
So basically the 96 well plates contain a substrate which change colour and give positive values, this experiment was done in duplicate so 2 plates were used, and as expected the positive wells matched, and there were only 2 positive values on each plates. I trying to upload a picture but I dont know how

April 26th, 2014, 12:37 PM  #4  
Global Moderator Joined: May 2007 Posts: 6,823 Thanks: 723  Quote:
well plates? substrate? substrate change colour and give positive values (connection between colour and positive value (of what?))  

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chance, probability, results 
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