A Researcher Is Interested in Studying Changes in Marital Satisfaction

question 30

Multiple Choice

A researcher is interested in studying changes in marital satisfaction over the course of marriage. She hypothesizes that marital satisfaction is highest when couples are newly married, that it decreases during the middle years of marriage, but rises again during later years of marriage. In order to test her hypothesis, she recruits fifty married couples within each of the following conditions: (1) married less than 10 years; (2) married 15-20 years; (3) married more than 25 years. All 150 couples (50 from each condition) complete a standardized measure of marital satisfaction.
What is the dependent variable?

• A) Length of marriage
• B) Passage of time
• C) Marital satisfaction
• D) Age of partners

Distinguish between the t-distribution and the normal distribution and understand the conditions under which each is used.

Calculate critical values and rejection regions for hypothesis testing using the t-distribution.

Interpret statistical data to estimate population parameters.

Understand the assumptions and prerequisites for applying t-tests in hypothesis testing.

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