Given statistical model yˆ = 9x + 47, where the response variable y is the anticiapted exam score and x is the number of hours studied the week. Using a complete sentence, determine and interpret the marginal change.
The marginal change is 9; that is, the minimum grade you can earn is 9%.
The marginal change is 47; that is, the maximum grade you can earn is 47%.
The marginal change is 9; that is, for each additional hour studied per week, expect an additional 9 points on the exam.
The marginal change is 47; that is,if you do not study, expect an additional 47 points on the exam.