Thread: How long will u need to play to ensure a positive return
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Old 11-21-2004, 04:50 PM
BruceZ BruceZ is offline
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Join Date: Sep 2002
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Default Re: How long will u need to play to ensure a positive return
[ QUOTE ]
Hi guys. My math skills need some serious work. I was wondering if someone might be able to help me out with the formula for determining how many hours would you would need to play to ensure a 97.5% chance of a positive return on a hypothetical example of a player with a win rate of 20 ph and a SD of 100 ph. Any help would be much appreciated.

Cheers!

Fonzy

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97.5% is about 1.96 standard deviations 1-sided, so time to break even is
(1.96*100/20)^2 = 96 hours.
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