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Dr. Fletcher is interested in whether joining a fraternity/sorority causes people to become more concerned about their attractiveness and appearance. He recruits a group of 55 freshmen (25 males, 30 females) who are planning to go through fraternity/sorority recruitment on his campus. After they join, he gives them a measure of attractiveness concern/appearance concern (the Body Concern Scale) .
In addition to measuring the Body Concern of the participants who joined a fraternity/sorority both immediately before and immediately after they join, Dr. Fletcher measures them for the 3 weeks before and the 3 weeks after. This type of design would be able to better address which of the following threats to internal validity?
Default Rate
The frequency at which borrowers fail to make scheduled payments on loans or securities.
Credit Policy
A set of guidelines that a company uses to determine the credit terms and conditions for its customers.
Economic Order Quantity
is a formula used by businesses to determine the optimal amount of inventory to order at one time, aiming to minimize holding and ordering costs.
Variable Cost
Costs that vary directly with the level of production or service delivery.
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