A Developmental Psychologist Conducted an Experiment to Examine the Effect

question 2

Multiple Choice

A developmental psychologist conducted an experiment to examine the effect of type of text used on math performance across age groups. Fifth grade and college students studied age-appropriate math concepts using either a traditional hard copy book text or an e-text available on the web. Performance on a math test of the concepts studied was then measured for all students. The appropriate statistical test to analyze the data in this study is ______.

• A) a one-sample t test
• B) an independent samples t test
• C) a paired/related samples t test
• D) an ANOVA

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Definitions:

Joint Probability Distribution

A statistical measure that calculates the likelihood of two events happening simultaneously and to what extent they are associated.

Probability Distribution

A function in statistics outlining every possible outcome and its probability for a random variable across a predetermined scope.

Car Salespeople

Individuals engaged in selling automobiles, often working at car dealerships or showrooms.

Joint Probability Distribution

The probability distribution of two or more random variables at the same time, used to study the relationship between them.