Chapter 6Basic Parametric Inferential Statistics and t Tests
Parametric inferential statistical procedures allow you to draw inferences about populations based on samples of those populations. To make these inferences, you must be able to make certain assumptions about the shape of the distributions of the population samples.
Section 6.1 Review of Basic Hypothesis Testing
The Null Hypothesis
In hypothesis testing, we create two hypotheses that are mutually exclusive (i.e., both cannot be true at the same time) and all inclusive (i.e., one of them must be true). We refer to those two hypotheses as the null hypothesis and the alternative hypothesis. The null hypothesis generally states that any difference we observe ...
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