Exercises 61 to 64 refer to the following setting. For their final project, a group of AP Statistics students investigated the following question: "Will changing the rating scale on a survey affect how respondents answer the question?" To find out, the group took an SRS of 90 students from an alphabetical roster of the school's just over 1000 students. The first 45 students chosen were asked to rate the cafeteria food on a scale of 1 (terrible) to 5 (excellent). The remain- ing 45 students were asked to rate the cafeteria food on a scale of 0 terrible) to 4 (excellent). Here are the data: 1 to 5 scale Rating 1 1 2 3 4 5 Frequency 3 1 13 3 2 Rating Frequency 0 to 4 scale 0 1 2 3 4 0 0 2 18 18 8 61. Design (4.2) Was this an observational study or an experiment? Justify your answer. Exercises 61 to 64 refer to the following setting. For their final project, a group of AP Statistics students investigated the following question: "Will changing the rating scale on a survey affect how respondents answer the question?" To find out, the group took an SRS of 90 students from an alphabetical roster of the school's just over 1000 students. The first 45 students chosen were asked to rate the cafeteria food on a scale of 1 (terrible) to 5 (excellent). The remain- ing 45 students were asked to rate the cafeteria food on a scale of 0 terrible) to 4 (excellent). Here are the data: 1 to 5 scale Rating 1 1 2 3 4 5 Frequency 3 1 13 3 2 Rating Frequency 0 to 4 scale 0 1 2 3 4 0 0 2 18 18 8 61. Design (4.2) Was this an observational study or an experiment? Justify your