I know this is a derivation from the central limit theorem and used to calculate the number of times one needs to play a game with a buy-in and end up with a positive profit.
$$n=\left(\frac{1.96\sigma}{p-\mu}\right)^2$$
Is there a name for it?
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2Looks like a 95 percent confidence interval formula – Paul Nov 12 '17 at 23:37
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@Paul: reminds of, but is not. – Jul 12 '18 at 18:34