export declare function wilsonLowerBound(successes: number, trials: number, confidence?: number): number;
export interface PromotionInput {
    successes: number;
    trials: number;
    minSamples?: number;
    threshold?: number;
    /** Measured precision; promotion requires it to be >= 0.90. null = unmeasured = never promote. */
    precisionMeasured?: number | null;
}
export declare function shouldPromote(input: PromotionInput): boolean;