Q13. The managing director of a consulting group has the following monthly data on total overhead costs and professional labor hours to bill to clients billable hours overhead costs 3,000 365,000 4,000 400,000 5,000 430,000 6,000 477,000 7,000 560,000 8,000 587,000 The scatter plot and trendline is given below:. Based upon the trendline, what is the relationship between billable hours (x) and overhead costs (y). Question 13 options: y = 46.771x + 212590 x = 46.77ly + 212590 y = -46.771x + 212590 No linear relationship Q14. See Q13 Interpret the coefficients of your regression model. Question 14 options: 212590 represents as billable hours increase by 1, overhead costs increase by $212590, 46.771 represents the fixed overhead independent of billable hours 46.771 represents as billable hours increase by 1, overhead costs increase by $46.77, 212590 represents the fixed overhead independent of billable hours 46.771 represents as billable hours increase by 1, overhead costs decrease by $46.77, 212590 represents the fixed overhead independent of billable hours None of above Q15. See Q13. What does R2 (97.26%) mean? Question 15 options: 97.26%% of variation in the dependent variable that CANNOT explained by the independent variable in a regression model. 3.74% of variation in the dependent variable that is explained by the independent variable in a regression model. 97.26% of variation in the dependent variable that is explained by the independent variable in a regression model. None of above