4.7.A—Identify an appropriate confidence interval procedure including the parameter for the difference between two…

Identify an appropriate confidence interval procedure including the parameter for the difference between two population means.

• Based on the sample data, a confidence interval can be calculated to estimate the difference between two population means. The appropriate confidence interval procedure for two independent samples is a twosample t-interval for the difference between population means.
• The parameter for a confidence interval for a two-sample t-interval for the difference between population means should reference the difference in the means, the response variable, and the populations in context.