In Testing the Difference Between Two Population Means Using Two

question 108

Multiple Choice

In testing the difference between two population means using two independent samples, the population standard deviations are assumed to be known and the calculated test statistic equals 2.56. If the test is two-tail and 5% level of significance has been specified, the conclusion should be to:

• A) reject the null hypothesis
• B) not to reject the null hypothesis
• C) repeat using a one-tail test
• D) choose two other independent samples
• E) none of these

---

Definitions:

Environmental Influence

The effect that surroundings, including cultural and natural factors, have on the development and behavior of individuals.

Binge-Eating Disorder

A psychological condition characterized by recurrent episodes of eating large quantities of food feeling a lack of control during the episodes, and guilt or shame afterward.

Guilty

The feeling of responsibility for wrongdoing or failure.

Purge

The act of cleansing or purification, often used metaphorically to describe the elimination of unwanted feelings, memories, or conditions.