A Researcher Did an Experiment Testing the Effects of Noise

question 29

Multiple Choice

A researcher did an experiment testing the effects of noise on students' ability to study effectively in different environments.There were three levels of background noise and two different environments so the design was a 3 × 2.The researcher obtained an interaction effect and decided to try to identify the source of the interaction effect by testing the effects of the noise variable separately at each level of the environment variable.Which of the following types of effects in the analysis of a complex design was the researcher testing?

• A)main effect
• B)simple main effect
• C)moderator effect
• D)comparison of two means

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Definitions:

Upper Endoscopy

Upper endoscopy is a medical procedure that involves using an endoscope to visualize and examine the interior surfaces of the upper gastrointestinal tract, including the esophagus, stomach, and duodenum.

Flexible Sigmoidoscopy

A diagnostic procedure that uses a flexible tube with a light and camera to examine the lower part of the colon and rectum.

Hip Fracture

A break in the upper portion of the femur (thigh bone), often caused by trauma or conditions like osteoporosis, typically requiring surgery.

Bed Pan

A shallow vessel used by a bedridden patient for urination or defecation while remaining in bed.