A choir-attendance model is being scored against a stated margin and confidence. After a large prefix of the planned pile, the running score is stably inside the band. What official idea may testers use, without cherry-picking a lucky streak?

After a large prefix of the planned pile, the running score sits stably inside the band. Sequential testing, or early stopping, lets testers halt once the evidence supports or rejects the target. Cherry-picking a lucky streak, computing a sample-size formula, and forbidding any early stop miss that official idea.