Which of the Following Is an Example of an After-Only

question 50

Multiple Choice

Which of the following is an example of an after-only case study experimental design?

• A) Store traffic is measured following the announcement of a clearance sale
• B) Store traffic is measured; a sale is announced; store traffic is measured again
• C) People who saw an ad are compared to people who didn't see the ad on their attitude toward the brand
• D) Random assignment is used to divide participants into the control and experimental groups; a control group responds to a pre-test on brand preferences and a post-test; an experimental group responds to a pre-test, is exposed to a commercial for the brand, and responds to a post-test
• E) Random assignment is used to divide participants into control and experimental groups; the experimental group is exposed to a commercial and then attitude toward the brand is measured; attitude toward the brand is also measured for the control group

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Definitions:

ABO Antigens

Specific markers found on the surface of red blood cells that determine a person's blood group in the ABO blood group system.

+Rh Antigen

A protein present on the surface of red blood cells that denotes the Rh+ blood group, playing a critical role in blood transfusion compatibility.

Agglutination

A reaction in which particles, such as pathogens or red blood cells, clump together, often due to an immune response.

Blood-Typing Chart

A blood-typing chart is a tool used to identify an individual's blood type based on the presence or absence of certain antigens on the surface of red blood cells.