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2. Suppose the relationship between your study time and your grade on a Economics midterm is given by the following table:
What is the "marginal grade improvement (MGI)" of the 5th hour of studying?
points
| If you study for | Your grade will be |
|---|---|
| 4 hours | 81 |
| 5 hours | 91 |
| 6 hours | 94 |
What is the "marginal grade improvement (MGI)" of the 5th hour of studying?
points
Hint
Box 1: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity
3. What is the "marginal grade improvement (MGI)" of the 6th hour of studying?
points
points
Hint
Box 1: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity
4. Why might the MGI be diminishing?
Hint
Box 1: Enter your answer as text. This question is not automatically graded.