Experiment Design - Critical Thinking

6 hours if possible - Thank you

Respond to the following in a minimum of 175 words: 

Suppose a university teacher wants to know whether or not requiring attendance improves student learning. How could she find out? Describe an experiment that an instructor might actually use. Review the experiments posted by your classmates. Evaluate the pros and cons of their proposals, and when applicable, suggest improvements or ask follow-up questions.