Sequential Settings
A bandit sends 91% of traffic to one arm and estimates the difference 1.6 times less precisely.
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Likelihood Ratio (LR)
At ten tosses, -2 log lambda exceeds its 95th percentile 0.1084 of the time under a true null.
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Sequential Probability Ratio Test (SPRT)
A fixed test needs 69 observations; the SPRT averages 34.3 under the null. Its 99.9th percentile is nine times its median.