1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Chebychev probability

  1. Apr 21, 2013 #1
    A non-negative random value X such that

    If p be the probability that the random value is at least 5 then what is the least upper bound you can give for the probability p with this information?

    i think that i must use the type of chebychev like this

    p(X>=5)<=(E(X)/5) but we have E(e^X) if i put e^X=Y then i will have this

    p(e^X>=5)<=(E(Y)/5) and i am taking ln(log) and i have: p(X>=5)<=19/5 but the quiz says that 19/5 its not correct any ideas?
  2. jcsd
  3. Apr 21, 2013 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    If ##X\geq 5##, what bound can you put on ##e^X##?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted