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Question about Standard Deviation

Discussion in 'BBS Hangout: Debate & Discussion' started by tchou, May 31, 2009.

  1. tchou

    tchou Member

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    Any stats guys out there that could help me out?

    Assuming I have an imperfect coin that lands on H 55% of the time and T 45% of the time. I want to know how to find the distribution of probability for a given number of heads or tails for N number of flips.

    For example: I've flipped the coin 8 times, how often will I get 3H and 5T, or 7H and 1T, etc?
     
    #1 tchou, May 31, 2009
  2. moestavern19

    moestavern19 Member

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    Tell your commie pinko 5H to stay the hell off my lawn or I'll exercise my 2nd amendment rights!
     
    #2 moestavern19, May 31, 2009
  3. Sweet Lou 4 2

    Sweet Lou 4 2 Member

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    Shouldn't you try to find someone other way to get help on your homework?
     
    #3 Sweet Lou 4 2, May 31, 2009
  4. wnes

    wnes Contributing Member

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    Unfair coin or not, this is an example of binomial distribution. I think you are given enough hint.
     
    #4 wnes, May 31, 2009
  5. orbb

    orbb Member

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    Unfortunate isn't it, how far we have come in this country. Teens without the fortitude or morals to do homework by themselves. Nowadays, they need internet magickery for every god**mn thing. I think its time to institute an involuntary 2 yr draft, knock some sense into these young whippersnappers.
     
    #5 orbb, Jun 1, 2009
  6. OrangeRowdy95

    OrangeRowdy95 Member

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    Use a TI calculator. Binompdf (n,p,k) will do the trick
     
    #6 OrangeRowdy95, Jun 1, 2009
  7. Northside Storm

    Northside Storm Member

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    Deviation is somewhere between -231 and +890, give or take 5000
     
    #7 Northside Storm, Jun 1, 2009
  8. tchou

    tchou Member

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    It would be nice if I were still in school. =\

    Does this mean if I were to find the distribution of tails, is the below correct?
    n = sample size
    p = probability of tails (45%)
    k = number of times tails comes
     
    #8 tchou, Jun 16, 2009
  9. nkbearsnk

    nkbearsnk Member

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    Well done!!!
     
    #9 nkbearsnk, Jun 16, 2009
  10. Dairy Ashford

    Dairy Ashford Member

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    Are you angry at the internet, or students who ask for help? It's homework; not a paper or exam.
     
    #10 Dairy Ashford, Jun 16, 2009
  11. KingCheetah

    KingCheetah Atomic Playboy

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    #11 KingCheetah, Jun 16, 2009
  12. aussie rocket

    aussie rocket Member

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    You know its the offseason when ...
     
    #12 aussie rocket, Jun 16, 2009
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