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Number of concurrences / number of opportunities for concurrence X 100 For example, two observers use a computer tablet to complete the identical checklist survey while observing 80 patients and families in the clinic waiting room. According to the checklist survey, the observers agree on 68 out of the 80 ratings. The calculation is 68/80 = 0.85 X 100 = 85%. Therefore, the observers agree 85% of the time, so their observations have a reliability of 85%. There is an acceptable range of reliability scores for qualitative research, with 90% being excellent and less than 50% being unacceptable CRITICAL THINKING 7-1 Application of Internal Consistency Four students were hired by the State Highway Safety Division to observe the behavior of drivers at a red light. Some of the behaviors included going through a yellow light as it turns red, not coming to a full stop, texting, eating, drinking, looking in the mirror, singing, talking on the phone, talking to passengers, paying attention to traffic before proceeding into the intersection, looking both ways before proceeding, seat belt buckled, and so on. The checklist had 15 items for a maximum score of 50. Answer the following questions. The four students rated the following 5 drivers: 1. Student 1: 38, 42, 28, 37, 42. What was the average (mean) score? 2. Student 2: 34, 37, 29, 36, 45. What was the average (mean] score? 3. Student 3: 32, 37, 26, 38, 43. What was the average (mean) score? 4. Student 4: 31, 40, 27, 39, 41. What was the average (mean) score? 5. What was the mean score for the group of four students? Calculate how reliable the students were when scoring the behavior of drivers. Based on the criteria in lable 7-1, were the students' scores within an acceptable range