Answer Happy

Complete parts (a) through (h) for the data below. 50 60 2 X 20 y 30 40 78 75 (a) By hand, draw a scatter diagram treating x as the explanatory variable and y as the response variable. Choose the correct scatter diagram below. OA. OB. My 100+ 0+ 10 O A. (b) Find the equation of the line containing the points (30,75) and (60,50). AY 70- * 10- D (Type Integers or simplified fractions.) (c) Graph the line found in part (b) on the scatter diagram. Choose the correct graph below. IN A. 72 62 50 Y V | Q 100 Q Q (d) By hand, determine the least-squares regression line. O B. AY 70- 10- Ax 10 70- 10- 0 70 Q Q . M 100 Q Q G O C. 1001 10 O C. Ay 70- 10- 10 70 O D. 100- 10 70 2

(c) Graph the line found in part (b) on the scatter diagram. Choose the correct graph below. O A. 701 10+ 100 M AY V (d) By hand, determine the least-squares regression line. y=x+ (Round to three decimal places as needed.) 10 IN 100 Q Q 70 B. 701 Q 10 (e) Graph the least-squares regression line on the scatter diagram. Choose the correct graph below. O A OB. 10 Ay 701² 10+ 70 * Q 100 ✔ 7 OC. 100 0 10 O C. Av 70- 10- 10 HUMA JH 70 OD. A 100- 0 10 OD. Ay 100- 10 70