Given the Life expectancy data for the countries of the E.U., can we conclude that the mean Life Expectancy in the U.S. is greater than the mean Life expectancy in the E.U.?

Bring to mind a real-world situation or problem that could be addressed using a single-sample t test.

For this situation or problem:

Clearly identify the independent and dependent variables you would study.

Generate the statistical null and alternative hypotheses.

Describe what information the effect size would tell you that the probability value would not.

Using realistic numbers for values of degrees of freedom, sample size, and t statistic, report hypothetical results in a few sentences using correct APA format.