1. Why do we phrase null and alternative hypotheses with population parameters and not sample means? A) None of the other answers. B) Because sample means are inaccurate. C) Because inferential statistics are used to make decisions about population parameters. D) Because we always have access to population parameters. 2. What information does a standardized effect size provide? A) The magnitude of the effect. B) The difference between two groups, in standard deviations. C) All of the other answers are true. D) How practical an effect might be.
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The correct answer is C) Because inferential statistics are used to make decisions about population parameters. The purpose of inferential statistics is to make inferences about the population based on the sample data. Therefore, the null and alternative Show more…
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