Re: Expectation - May 20

Posted by aditi5000 on May 20, 2012; 12:42pm
URL: http://discussion-forum.276.s1.nabble.com/Expectation-May-20-tp7567648p7567827.html

Ok I solved this again. Now getting the minimum conditions required for all propositions to be true
x3,x6,x9 need to be true and,
either x4 needs to be false or  x7 needs to be false or x5 needs to be true (any one of them is enough)

As for expected values..
there are 7 propositions.
each has 0.5 chance of being true or false.
this depends on the truth value of the individual variables.
each of the 9 variables has .5 chance of being true and there are 3 variables in each proposition thus, .125 probability.
So expected no of true propositions
=7*0.5*9*0.125
=3.9375