The test statistic measures how close the sample has come to the null hypothesis and often follows a well-known distribution,such as the normal,t,or chi-square distribution.

Question

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This is correct. The test statistic measures the difference between the sample data and the null hypothesis, and it often follows a known distribution. This distribution is used to calculate the p-value and determine if the null hypothesis should be rejected or not.

The Test Statistic Measures How Close the Sample Has Come