Given are five observations for two variables, x and y. Xi 3 12 6 2O 14 (a) Develop a scatter diagram for these data. )1 7O 70 60 60 c 50 - 0 50 I 40 - 40 30 - 30 20 - 0 20 I 10 10 J | I | I. X 0 5 10 15 20 25 O G) O J' 70 70 50 . 60 I 50 0 50 4O 40 30 3D I 20 0 20 10 10 i . . l L x 0 5 10 15 20 25 0 0 (b) What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? 0 There appears to be a positive linear relationship between x and y. 0 There appears to be no noticeable relationship between x and y. 0 There appears to be a negative linear relationship between x and y. (c) Try to approximate the relationship between X and y by drawing a straight line through the data. .V (cl) Develop the estimated regression equation by computing the values of (30 and 131 using b1 : b0=i77b11 9=| ' (e) I y I O I I I l I i | l x 0 5 10 15 20 25 Y I I I I O . . . . .x 0 5 10 15 20 25 y I I O I . . . . .x 5 10 15 20 25 I I I I l I i l L X 5 10 15 20 25 Swahmih and 2(xf 701 Use the estimated regression equation to predict the value of y when x = 10