    func testBinomialProportionConfidenceInterval() {
        let correct_lower = 0.5838606324
        let correct_upper = 0.7914774104
        let results = StatsHelper.binomialProportionCondifenceInterval(wins: 30,
                                                                       losses: 13,
                                                                       confidence: 0.87)

        XCTAssert(fuzzyFloatEquals(a: results.lower, b: correct_lower))
        XCTAssert(fuzzyFloatEquals(a: results.upper, b: correct_upper))