import { ConfidenceLevel } from './ConfidenceLevel';
export declare class ConfidenceInterval {
    private readonly _margin;
    private readonly _lower;
    private readonly _upper;
    private readonly _marginPercent;
    private readonly _degreeOfFreedom;
    private readonly _level;
    get margin(): number;
    get marginPercent(): number;
    get lower(): number;
    get upper(): number;
    get level(): ConfidenceLevel;
    constructor(sampleSize: number, estimation: number, standardError: number, confidenceLevel: ConfidenceLevel);
    private getZLevel;
}