Ana is going to interview every student in her school. She would like to know about how many hours per week each student spends doing each of the following: reading, watching television, and playing video games. She plans to write a report based on her findings. Based on this information, which statements are true? I. Ana is conducting an experiment. II. Ana is conducting a sample survey. III. Ana is conducting a census. IV. The distribution of the data will be approximately normal.