Final answer:
The equation of the best-fit line is ŷ = -173.51 + 4.83x. To find the equation of the regression line, calculate the slope (m) and y-intercept (b) using the given formulas.
Step-by-step explanation:
The equation of the best-fit line is ŷ = -173.51 + 4.83x. To find the equation of the regression line, we need to calculate the slope (m) and y-intercept (b). The slope can be approximated as 0.09, and the y-intercept can be found using the formula b = (sum of median y values) - (slope * sum of median x values). By substituting the values given (sum of median x values = 1264, sum of median y values = 219.5), we can calculate b to be approximately 35.25.