A group of pain researchers want to test the hypothesis that different religious groups have different pain complaints. The following data were collected from a review of the patient charts from a hospital pain clinic. 
Definitions:
All-Terrain Vehicle
A motorized off-road vehicle designed to travel on four tires and handle a wide variety of terrain.
Off-Road Inc.
A fictional name that suggests a company specializing in products or services related to off-road activities or vehicles.
Design Defect
A flaw or error in the planning or engineering of a product that makes it unsafe or fails to perform its intended purpose.
Alternative Design's Effect
Refers to the impact that choosing a different design might have on the results or outcomes of a project or product.
Q4: An investigator collects the following data on
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Q145: Define F test.