Suppose we have the following information on the examination scores and weekly employment hours of eight students:

Suppose we have the following information on the examination scores and weekly employment hours of eight students:

Exam Score     Employment Hours

     80                          10

     80                           5

     68                          15

     95                           5

     75                          21

     60                          40

     90                           0

   100                          0

Assuming Exam Score is the dependent variable (Y) and Employment Hours is the independent variable (X), calculate the simple linear regression equation by hand and test to see whether the slope on X is significant at the 0.05 level. Make sure to show your work. Using Excel and the p-values, comment on the goodness of fit for this regression model.