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'v '_ - __..I A psychologist is interested in the relationship between exercise and attention span. According to the theoretical thesis, teenager's attention span is influenced by their exercise time. She collected data on 4 teenagers (all are at 16 years old). Exercise was measured by the average time they spend on exercise per week and attention span was captured by average time that the teenager could focus on study-task. Exercise (in hours) Average attention span (in hours) 1 a) identify X and Y b) calculate correlation between two variables and INTERPRET the results c) calculate regression line between two variables and INTERPRET the results d) what are the predicted average attention span if a teenager spends 3.5 hours on exercise