I need help.

1. A professor believes there is a relationship between student's grades and the number of hours they work per week at part-time jobs. Develop the simple regression equation for this data, compute r for this data, compute the standard error and compute the coefficient of variation. Estimate what the grade should be for a student that works twenty hours per week. Based on your observations from this data and your computations, should she use regression analysis to prove a relationship? Hours / Week Worked (x)

GPA (y) 10 2.5 22 3.0 24 2.3 28 3.5 9 4.0 10 1.8 7 2.8 17 2.9