a. 4.6 Random assignment and Australian school psychologists: The researcher described in Exercise 4.5 has developed two training modules. One is implemented in classroom setting and requires that school psychologists travel to a nearby city for train ing. The other is a Web-based training module and is far more practical and cost effective to use. Half of the participants will be randomly assigned to classroom train ing and half will be randomly assigned to use the Web-based program. She will admin ister a test to participants after training to determine how much they learned. Her hope is that the Web-based training will work as well as the classroom training, resulting in savings of both cost and time. What is the independent variable in this experiment? What are its levels? b. What is the dependent variable in this experiment? What features of the research design qualify this study as an experiment? Explain how you would use the randomizer Web site to assign the 30 participants to levels of the independent variable. State what you would enter in each of the boxes on the site: how many numbers you want to generate, how many numbers per set, number range, whether each number remains unique, and whether you wish to sort your numbers. d. Use the randomizer to generate the assignments for the 30 participants. List the assignments. e. Repeat the process, but this time generate assignments so that exactly 15 are in each condition. What did you do differently to achieve this goal? f. Repeat the process one more time, but now generate assignments in blocks of 10. Be sure that half of each block of 10 is in each condition. Explain what you did. C