Use the following passage for questions 3, 4 and 5. Alexandra is forecasting sales based on the salesperson's salary. She collected the following data: Sales (10K) 1 Salary (K) 2 1.5 3 2 3.5 3 3.2 4 5 Alexandra wanted to use regression to forecast sales. What is the intercept coefficient (in the last table of your regression summary output) of the regression equation (keep all decimals in your answer)?