A sales manager for an advertising agency believes that there is a relationship between the number of contacts that a salesperson makes and the amount of sales dollars earned. A regression analysis shows the following results: Intercept Number of Contacts Coefficients -12.201 2.195 Standard Error 6.560 What is the regression equation? = 2.195 + 12.201X O=12.201 + 2.195X = -12.201 + 2.195X = 2.195 - 12.201X 0.176 t-Stat -1.860 12.505 p-value 0.100 0.000 G