Question

Question 17 of 20: Select the best answer for the question. 17. Civil engineers use regression analysis to estimate repair and replacement costs of different types of piping. The independent variable in their analysis, x, is the diameter of the pipe (in millimeters). Data for a sample of 13 different pipe sizes is shown in the table: Ratio 6.58 6.97 7.39 7.61 7.78 7.92 8.20 8.42 8.60 8.97 9.31 947 9.72 Diameter 80 100 125 150 200 250 300 350 400 450 500 600 700 Find the least squares line relating ratio of repair to replacement cost (y) to pipe diameter (x). A. y - 6.18+0013x B. y 633+ 0238x D. y 6.67+0048x

Answer 1