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July 22nd, 2015, 07:53 AM  #1 
Newbie Joined: Jul 2015 From: Ireland Posts: 1 Thanks: 0  Need help reading formula
Hi all, I am having serious trouble trying to read the formula attached. If someone could explain to me what it means in English I would be extremely grateful. I know what most of the variables are but I am wondering if the P has a mathematical meaning? 
July 22nd, 2015, 02:32 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,660 Thanks: 647  P (in this context) means probability.

July 23rd, 2015, 11:46 AM  #3 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,261 Thanks: 895 
That says that the probability that the value of MTBF lies between those two fractions of MTBF (which depend upon $\displaystyle \alpha$) is less than $\displaystyle 1 \alpha$.

July 23rd, 2015, 05:29 PM  #4 
Global Moderator Joined: May 2007 Posts: 6,660 Thanks: 647  

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