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Determines statistical significance at some fixed

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The term critical value is often used to refer to the value of a test statistic that determines statistical significance at some fixed α level for a test. For example, +1.96 are the critical values for a two-tailed z-test at α = 0.05. In performing a t-test based on 21 observations, what are the critical values for a one-tailed test when α = 0.05? That is, what values of the tstat will give a one-sided p-value that is less than or equal to 0.05? What are the critical values for a two-tailed test at α = 0.05?

Reference no: EM131332447

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