Question

Professor Linda was interested in establishing whether students who took their quiz with a red crayon would do better than students who took their quiz with whatever pen they happened to bring to class that day. She had 30 red crayons and handed them out to the first 30 students who arrived to class. The 30 remaining students who arrived to class after that completed the quiz with their own pens. This process would most clearly violate the principle of:

Answer 1

Answer:

Random assignment

Explanation: