A researcher is interested in the relationship between television viewing and the development of 'brain mush.' She collects data from a sample of middle school students, asking them to log the number of hours of television they watch each day for one month. At the end of the month, she measures the amount of brain mush in each child's cranium. These are the data she obtained: Participant ID Mean Hours of TV Viewing Per Day Index of Brain Mush 1 4 13 2 7 14 3 4 11 4 3 15 5 3 12 6 2 9 7 7 14 8 7 15 9 7 13 10 8 16 11 5 11 What is the predicted brain mush index value for a child who watches an average of 6 hours of TV each day