My Math Forum statistics help please

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 May 9th, 2014, 03:20 PM #1 Newbie   Joined: May 2014 From: germany Posts: 2 Thanks: 0 statistics help please Hi all, I really need your help to solve these problems. Thanks in advance.
 May 14th, 2014, 07:59 PM #2 Senior Member     Joined: Nov 2013 From: Baku Posts: 502 Thanks: 56 Math Focus: Geometry P(fuel)=0.8 P(navigation)=0.55 P(fuel AND navigation) = 0.45 Now draw 2 intersecting circles. The intersection is 0.45, first circle is 0.8, so non-intersecting part of first circle is 0.35, and the second circle is 0.45, therefore non-intersecting part is 0.1. a is 0.45 b is 0.35 c is 0.35+0.45+0.1=0.9. Second problem is also easy. Sum up each row and column. Example probability of northeast is (sum of northeast column)/(total sum)

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