4.9.A—Identify an appropriate testing method for the difference between two population means including the parameters…

Identify an appropriate testing method for the difference between two population means including the parameters for the difference between the two population means.

• The appropriate test for the difference between two population means is a twosample t-test for a difference between two population means.
• The parameters for a hypothesis test for the difference between two population means should reference the population parameters, the response variables, and the populations in context.