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Hypothesis tests for a mean

Use a critical region · Diagrams

Critical regions: allocate the significance level

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Three normal curves show 10% on the left below −1.28155, 10% on the right above 1.28155, and 5% in each tail beyond ±1.64485 for a two-sided 10% test.
Three normal curves show 10% on the left below −1.28155, 10% on the right above 1.28155, and 5% in each tail beyond ±1.64485 for a two-sided 10% test.
Three normal curves show 10% on the left below −1.28155, 10% on the right above 1.28155, and 5% in each tail beyond ±1.64485 for a two-sided 10% test.
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