Question 3 0 / 1 Pts Jessica Day was interested in whether or not playing music before an exam was helpful for her middle school students. She randomly selected one seventh grade class and one eighth grade class. In each class half of the students were randomly assigned to listened to music before their exam, and the other half did not. What type of study was conducted? Randomized Block Experiment Observational Study Completely Randomized Experiment Matched-Pairs Experiment Rachel Green, a fashion buyer at Ralph Lauren, wanted to know which seasonal clothing line Ralph Lauren customers prefer. She randomly selected 200 Ralph Lauren customers to survey about their seasonal preferences. She asked the following question: "Which seasonal clothing line is your favorite: spring, summer, fall, or winter?" The results were as follows: . Spnng:10 - Summer: 11 - Fall: 149 . Winter: 20 Based ONLY on this information (do not try to infer anything else!), answer the following questions. 1. (2 points) Did sampling bias occur? Why or why not? 2. (2 points) Did response bias occur? Why or why not? 3. (2 points) Did nonresponse bias occur? Why or why not? Question 2 Nora West-Allen decided to survey the residents of Central City to determine the approval rating of the Flash. She surveyed the rst ten people that she saw inside the coffee shop CC Jitters. Which sampling technique did Nora use? Convenience Sampling Cluster Sampling Stratied Sampling Systematic Sampling Simple Random Sampling