Determine which method of data collection is the most appropriate. Explain and ty. 1. A study of the number of time students at a certain high school spends studying per week. 2. A study on the affect of caffeine on the attention span. 3. A study on the affects of texting while driving. Describe how to conduct this experiment as a completely randomized design. 4. 150 students at Olympia High School volunteer for an experiment to determine if taking the SATs in cold classrooms produces better test results than taking the SATs in warm classrooms. Describe how to conduct the experiment presented in #4. as a randomized block design taking into account student G.P.A.'s. 5. You realize that students past classes and grades will also affect how they perform on the SATs. Describe how to design the experiment presented in #4. as a matched-pairs design. 6. You realize that each student should be tested under both conditions.