A 95% confidence interval will always lead to the same conclusion as a significance test using a significance level of = .
A 99% confidence interval will always lead to the same conclusion as a significance test using a significance level of = .
The 95% confidence interval include as a plausible value, so we H0. We convincing evidence that the true mean amount of sleep that newborns get per day for their first several days after birth 20 hours.
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Significance Tests and Confidence Intervals
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