Two Independent Groups When We Use Random Assignment in an Experiment

question 65

Multiple Choice

Two Independent Groups When we use random assignment in an experiment, we guarantee that

• A)every subject in our sample has an equal chance of being placed in any of the treatment conditions.
• B)every subject in the population has an equal chance of being selected for the experiment.
• C)the treatment groups are identical on potentially confounding extraneous variables.
• D)treatment order is randomized to prevent order effects.

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Definitions:

Pharynx

A muscular tube at the back of the throat which connects the mouth to the esophagus and serves as a pathway for food and air.

Amphibian Respiration

The process by which amphibians exchange gases with their environment, utilizing skin, gills, and lungs at different life stages.

Skin And Lungs

Primary organs in animals for protective barrier and gas exchange, respectively; skin acts as a shield against environmental hazards while lungs facilitate oxygen intake and carbon dioxide expulsion.

Alveolar Walls

Thin layers of tissue that form the structure of alveoli, the tiny air sacs in the lungs where gas exchange between the air and blood takes place.