Researchers Investigated the Reduction of Littering in Three Classrooms

question 5

Multiple Choice

Researchers investigated the reduction of littering in three classrooms.Which class still showed a reduction in littering two weeks after the study ended?

• A)the class that was told that they should be neat and tidy
• B)the class reprimanded repeatedly for littering
• C)the class congratulated for being neat and tidy
• D)the class whose littering was ignored

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Definitions:

Hypothesized Probability Distribution

A specified probability distribution based upon assumptions or theories, prior to analyzing data.

Chi-Square Tests

A statistical test used to determine the significant difference between observed and expected frequencies in one or more categories.

Equality

The state or quality of being identical, equal, or equivalent in value, measure, significance, etc.

Degrees of Freedom

The number of independent values or quantities that can be assigned to a statistical distribution, minus the number of parameters estimated.