Classwork: Unit 1 Part 2: Written Exercises A researcher is interested in the effect of positive feedback on academic behavior among adolescents. To study this, they divide a group of 100 adolescents into two groups. In both groups, the adolescents are asked to write a brief essay about a difficult experience they went through. They are told that their essay will be evaluated by a writing expert for its creativity and skill. The first group of adolescents receive positive feedback-the adolescents are told that the evaluator felt they showed considerable talent and creativity. The second group of adolescents receive no feedback-they are told that the evaluator is behind on work and will not have time to give feedback on their essay after all. Following the evaluation (or non-evaluation) experience, all the adolescents are asked how interested they would be in attending an extracurricular writing program that meets on the weekends. 6. What is the sample for this study? How do you know? I ne 7. What is the population for this study? How do you know? 8. What is the independent variable in this study? How do you know? endent 9. What is the dependent variable in this study? How do you know? en 10. The researchers find that the average interest score in the "positive feedback" group is a 65 (higher scores indicate higher interest). The average interest score in the "no feedback" group is a 51. Are these numbers sample statistics or population parameters? Explain your answer. 3