Accord.Tests.Statistics.ZTestTest.ZTestConstructorTest4 C# (CSharp) Method

        public void ZTestConstructorTest4()
        {
            // Example from http://science.kennesaw.edu/~jdemaio/1107/hypothesis_testing.htm

            double mean = 51.5;
            double stdDev = 10;
            int samples = 100;

            double hypothesizedMean = 50;

            // Null Hypothesis: mean =  58
            // Alternative    : mean != 58

            OneSampleHypothesis hypothesis = OneSampleHypothesis.ValueIsDifferentFromHypothesis;
            ZTest target = new ZTest(mean, stdDev, samples, hypothesizedMean, hypothesis);

            Assert.AreEqual(1.5, target.Statistic, 0.01);
            Assert.AreEqual(OneSampleHypothesis.ValueIsDifferentFromHypothesis, target.Hypothesis);
            Assert.AreEqual(DistributionTail.TwoTail, target.Tail);
            Assert.IsFalse(target.Significant);
        }