Why can you conclude that a linear relation exists between Test Grade and Study Hours? Use a = .05. a. Use the results from the Regression output to answer this question.  b. Verify this by solving...

Why can you conclude that a linear relation exists between Test Grade and Study Hours? Use a = .05.

a. Use the results from the Regression output to answer this question.

 b. Verify this by solving for the appropriate t-value by hand and comparing the result to a critical t-value from Appendix D.