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About derpdederp

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  • Biography
    "Gedanken ohne Inhalt sind leer, Anschauungen ohne Begriffe sind blind." ~Kant
  • Interests
    Math, physics, history, languages, philosophy, music/guitar, running, hiking, biking, etc.
  • Gender
  1. I'm late to the party, but basically since I just knew that the density of a sum of N i.i.d. random variables with density p is simply the N-fold convolution of p with itself, I tackled this one with Laplace transforms. You can transform that convolution to the Laplace domain to get 1/(s^N). Next, you do the inverse transform to get the density of the sum on [0,1] as q(x) = x^(N-1)/(N-1)!. Now choose alpha in [0,1] and integrate q(x) from 0 to alpha to get P(sum<alpha) = alpha^N/N! Looks like that's what others have as well.
  2. I am not good at probability. I also lack the experience of doing it over more than one variable ... Looks like a nice study topic in waiting list. :)

  3. Glad you're doing okay :)

    I'll post again when Monte posts his next problem! ;)

    I've been doing a lot of probability lately so when I saw that last problem I was like oh I know how to do this lol

  4. Life has been rough but I sail on. :)

    Post more. We need more maths people here to beat Monte.

  5. I pop in every once in a while :)

    How are things?

    And don't worry, we can still party

  6. You're back!!!!!!!!! :throw a party: Oh wait. Forget the party. We're INTJs. :roll eyes:

  7. My solution, though I assumed the formulas for the distributions of min and max of i.i.d. random variables, cuz 2 lazy 2 prove: https://www.dropbox.com/s/7xhmlpaq7xz4dpk/MeanMeanMean.pdf?dl=0
  8. Oh so you're still around!

  9. I'm afraid you will find that most here are ignoramuses, quite obtuse, and definitely mathematically illiterate. Excellent post.

  10. Good post. Don't despair, you're not the only one who notices how utterly vapid her posts are most of the time.

  11. honestly, i'll save you the embarrassment. good day.

  12. OK, then what exactly were you trying to point out?

  13. i don't see a contradiction. if im seeing something that isn't there, then your posts don't exist. assuming they are there, because i can see and read them, they do exist, and im not seeing what isn't there.

  14. If you think you see a contradiction, state it clearly. There is a chance you might be seeing something which isn't there, after all, and if that's the case I'm never going to see what you're refering to.

  15. Yes, it is true that the idea of blacks as helpless and wanting to be coddled has an origin in white people. Not just whites who plainly don't like blacks, but also self-hating whites who are slavishly guilt-ridden as well. This isn't to say that blacks themselves aren't partly responsible for their own image, though.