A Researcher Tests the Hypothesis That Students Who Study in the Room

question 10

Multiple Choice

A researcher tests the hypothesis that students who study in the room where they take their tests will perform better on the tests than students who study in other rooms.She requires one group to study in the classroom where the exam is given and another group to study in the library.All students take the test in the classroom,and their test performance is compared.In this example,where students study is the:

• A)independent variable.
• B)dependent variable.
• C)manipulation.
• D)hypothesis.

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Definitions:

One-tail Test

A statistical hypothesis test where the area of interest is in only one tail of the distribution.

Nominal Data

Nominal data refers to a type of data that is categorized without a natural order or rank, such as names, labels, or categories.

Z-test

A statistical test used to determine if there is a significant difference between the means of two variables, based on a normal distribution.

Chi-squared Distribution

A statistical distribution showing how the sum of squared independent standard normal variables is distributed, often used in hypothesis testing.