Dawn Kaeding, sales manager of Gullo Arenas, is checking to see if there is any relationship between promotional costs and ticket revenues at the sports stadium. She oblains the following data for the past 9 months (Click the icon to view the data.) She estimates the following regression equation Ticket revenues $43,814+ ($3 40 Promotional costs) Read the requirements Requirement 1. Draw the regression line and evaluate it using the criteria of economic plausibility, goodness of fit, and slope of the regression line Begin by plotting the regression line using April and December's advertising cost levels, then round the monthly revenues to the nearest increment of $100 (Enlarge the graph and use the line button displayed below to draw the graph.) Q Clear at