As part of a term paper, I am conducting a survey with my fellow students in which two conditions are to be tested in several image sets.
Condition 1: Green advertising statement
Condition 2: No green advertising statement
We will invent 4 fictitious companies and create 1 advertising poster for each condition. So we have a total of 8 images (4 image sets).
Now the question is how we adjust in the questionnaire that 4x a randomization or selection of only one of the images from the respective set is shown. Would an urn be the way to go here, and if so, how exactly would we go about it?
Unfortunately, none of us have had this case before.
Thanks in advance!