4.5.C—Justify a claim about the population based on the results of a hypothesis test for a population mean or…

Justify a claim about the population based on the results of a hypothesis test for a population mean or population mean difference.

• A formal decision explicitly compares the p-value to the significance level, α. If the p-value ≤α , then reject the null hypothesis, H:00 μμ= . If the p-value > α, then fail to reject the null hypothesis.
• The results of a hypothesis test for a population mean or population mean difference can serve as the statistical reasoning to support the answer to an investigative question about the population that was sampled.
• A conclusion for the hypothesis test for a population mean or population mean difference is stated in context consistent with, and in terms of, the alternative hypothesis using nondefinitive language. The conclusion should contain a reference to the parameter and the population. 131 Inference for Quantitative Data: Means UNIT 4