Question

Question 10 of 11 (4 points) View problem in a pop: 10.2 Section Exercise 19a,b,c (critical value, up table) The data show the average ages and lengths of service in months. Quest Check An Age 25.1 Time 66.5 25.2 70.1 25.8 74 27 89 27.1 82 Download data Solve || Guided Sol Show Exar Ask My Instr Link to Texti Part 1 The correlation coefficient for the data is r=0.946 and a =0.05. Should regression analysis be done? Tables The regression analysis should be done. Formulas Save for Lat Part 2 out of 3 Find the equation of the regression line. Round the coefficients to three decimal places. Submit Assign y'= a + bx CHECK INI Printing page only. Plugin hoidollo o n Show More MacBook Air

Answer 1

The data is given below the average ages and the lengthy of service in months Age Time (r) 25:1 66.5 630.01 | 44 22:25 25.2 70.1 635:04 | 4914:01 25.8 665.64 1 5 476 27 >921 27. 729 734.41 6724 L-130.21 E-381.6 = 3394) 12. 29457.26 The correlation coefficient for the data is Ž = 0.946 and 2-0.05. The regression analysis should be done. : The equation of regression line Yon X is, CY-) : byx (x-x). by x 29 = Ę. 1. La 2 1 IX - XI IX. 130.2. 26.04 TEDY - 381, 6 76.32 Boatex-(0) 2 1 (3394.1) - (26.04) bet = 0.78844 | 24 : 0 2 3 8 4 - 6 - 8 5 3 3 By' = Leyl a (29452,26) - (76.32) 2 10.7384 5 :. by = 66.9096 66. 2o96 - 8. 1626

byx = 0.946 x 8.1626 0.85 9 3 byx = 8 9 9 12 s. The regression en op line yon xis, (Y - Y ) : 6 x ( x − x ) Y-76.32 = 8.9913 ( * - 26.04 ) i Y-76.32 = 8.990) x - 234.1439 i Û 8.9913x - 234.1439 + 36.32 = 8.991) * - 157. 8.239 ŷ = a + boc This eq" is in the borm of Here q = -157.8239 1 b 8.9917