In a recent poll concerning sales and earnings, 15 companies responded with the following information. Earnings Company Sales ($ thousands) ($ thousands) JenStar 50.7 1.8 Biotech Co 87.3 1.5 Capital Consultants 27.9 ).7 Can Tech Supply 48.0 1.3 XYZ Co. 87.0 2.9 Spin Master Toys 102.4 3.2 Scatter Plot Earnings 20 40 60 100 Sales a) What are the dependent/ independent variables? O The dependent/independent variables are earnings/companies. O The dependent/independent variables are sales/earnings O The dependent/independent variables are companies/sales. O The dependent/independent variables are earnings/sales. b) Based on the scatter plot above, estimate the slope of the line. For full marks your answer should be accurate to at least two decimal places. Slope: 0 b) Based on the scatter plot above, estimate the y-intercept of the line. For full marks your answer should be accurate to at least one decimal place. Intercept: 0 d) From your findings in part b and c, determine the linear regression equation. y = 0 + 0x