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The t-test uses a sample to check whether the true #mean of a normally distributed #population differs from a given #target value. ???? https://loelschlaeger.de/statistik-mi... 0:00 Introduction 0:16 The initial situation 1:07 Hypotheses 2:14 The test statistic and its distribution 3:41 Visualization 9:18 An example 13:25 Summary