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Re: What\'s My Play?
This problem got my interest. I spent a few minutes working on it and got an answer of the probability of you winning this prop bet at 14%.
Just to clarify the problem, you said that it was 101 games, first to 51. Except with ties, nobody might get to 51 before you hit 101 games. I'm guessing you meant first to 51 regardless. For my program, I assumed every game had a win/lose outcome, with a win% as given by the EV % on twodimes. I'm sure it doesn't change the outcome too much. The probability of, in 101 games, of winning 0 games, losing 101 (with the nines, p = 0.553 per game) is: (1-p)^101 The probability of winning one and losing 100 is: (n choose r) * p^r * (1-p)^(n-r) where n = games = 101, r = games won = 1 ---- (n choose r) = n! / ( r!*(n-r)! ) Probability of winning 51 to 101 games is: SUM r=51 to 101: (n choose r) * p^r * (1-p)^(n-r) = 0.8579 Probability of AK winning 0 to 50 games should be: SUM r=0 to 50: (n choose r) * p^r * (1-p)^(n-r) = 0.8579 where p = .447 which checks out. Public Function PropBet() Dim n, r As Integer Dim prob, sum As Double n = 101 prob = 0.553 sum = 0# For r = 51 To 101 sum = sum + Factorial((n)) / Factorial((r)) / Factorial((n - r)) * prob ^ r * (1 - prob) ^ (n - r) Next MsgBox sum End Function |
#2
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Re: What\'s My Play?
[ QUOTE ]
Of course; now I see the trick. I'll run some sims on Probe and see what the distributions look like. This is a sucker bet, but man, you could fool a stack of people with it -- seriously, I could have laid off $20K in action in a heartbeat. I feel like an idiot. Live and learn. [/ QUOTE ] Sounds great at first doesn't it. I can imagine a lot of ppl going for it, especially if this guy was clever about how he offered it. |
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