# Check assumptions 2 state the null and alternate

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Unformatted text preview: g a significance test, we follow these steps: 1. Check assumptions. 2. State the null and alternate hypotheses. 3. Graph the rejection region, labeling the critical values. 4. Calculate the test statistic. 5. Find the p-value. If this answer is less than the significance level, α , we can reject the null hypothesis in favor of the alternate. 6. Give your conclusion using the context of the problem. When stating the conclusion you can give results with a confidence of ( 1 − α )(100)%. z – test Assumptions: 1. An SRS of size n from the population. 2. Known population standard deviation, σ . 3. Either a normal population or a large sample ( n ≥ 30 ). To compute the z – test statistic, we use the formula: z = x − µ0 σ/ n . t – test Assumptions: 1. An SRS of size n from the population. 2. Unknown population standard deviation. 3. Either a normal population or large sample ( n ≥ 30 ). To compute the t – test statistic, we use the formula: t = deviation. The t – test will use n...
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