Weekly Cars Sold versus Number of TV Ads 0 6 8 8 8 8 Number of Cars Sold O 5 10 15 20 25 30 Number of TV ads x =14.5, y = 12.1, sx=8.71, sy=9.58, and r = 0.919 We can conclude there is linear correlation between the number of TV ads and the number of cars sold because the sample size n is and its corresponding critical value for the correlation coefficient is . Is the correlation positive or negative? Find the equation of the least-squares regression line: The slope is: Round to 2 decimal places. The y-intercept is Round to 2 decimal places. The equation of the line is: Using the equation of the line we can predict that if the number of TV ads is 12 the number of cars sold will be Round your final answer to the nearest whole number. The interpretation of the slope in the context of the problem is: The interpretation of the y-intercept in the context of the problem is: . If it is not appropriate to interpret the y-interce pt answer "Not appropriate". The percentage of variation on the number of cars sold that can be explained by the number of TV ads is %