
Advanced Statistics Advanced Probability and Statistics Math Forum 
 LinkBack  Thread Tools  Display Modes 
February 28th, 2012, 08:56 PM  #1 
Member Joined: Sep 2009 Posts: 71 Thanks: 0  Probability and Expectation of Logical Propositions
Given seven propositions of the form in which the variables in each proposition are all different(although variables may be repeated throughout the other seven propositions) and may also be negated. a. what is the probability that a single proposition is true? my attempt: A proposition is true if it has at least one true value. The number of propositions with at least one true = total true/false outcomes  number of propositions with no true values = Pr[proposition is true] = b. What is the expected number of true propositions random variable denoting the number of True propositions random variable indicating whether the proposition is 1: true or 0: false Am I on the right track or am I completely wrong? 

Tags 
expectation, logical, probability, propositions 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
probabilitymathematical expectation  helloprajna  Math Books  0  November 18th, 2012 10:50 PM 
probability:expectation problem  schezleng  Probability and Statistics  7  August 5th, 2011 07:56 PM 
LOGICAL EQUIVALENCES  beatdown123  Applied Math  1  September 8th, 2010 10:20 PM 
expectation and Dice Probability Problem  YUNGBuckeye23  Advanced Statistics  6  December 19th, 2009 04:20 PM 
Logical Proof  aoricky21  Number Theory  4  September 22nd, 2007 03:35 AM 