Hello thank you for your help for this one i think we should go with (interview induced bias) thank you (ap statistics)

t. A teacher believes that whatever he says in class has no effect on his students. Just as he's about to quit his profession, a statistician enters the room and suggests that the teacher design a study to test his assumption. The study will look at whether providing inclass feedback on homework assignments enhances classroom performance. The teacher wants to know whether providing feedback before or after returning the assignments is most useful. He's also interested in the most effective means of presenting the feedback: verbal presentation. written handout, or a summary on overheads. Ultimately, he'd like to identify the best approach for increasing test scores of the students. The teacher has six classes on his schedule. Design an experiment that helps answer these questions. Be sure to identify the factors. the levels of the factors, the treatment gmu ps, and the response variable. Considering the teacher doesn't want to get red, does a control group seem plausible [or ethical] in this scenario? Considering students' schedules cannot be adjusted and classrooms consist of many students, comment on how the students will be assigned to the different treatment groups. Why would it not be possible to use simple random assignment ofall students? As much as possible, use diagrams instead ofwords to summarize your experimental design. How many subgroups would you need In complete the experiment? Describe a strategyI for randomization that fullls your previous answer: Discuss what might be a possible response variable