To help consumers in purchasing a laptop computer, Consumer Reports calculates an overall test score for each computer tested based upon rating factors such as ergonomics, portability, performance, display, and battery life. Higher overall scores indicate better test results. The following data show the average retail price and the overall score for ten 13inch models.1' Irand & Model Price (s) 05233 (3) Develop a scatter diagram with price as the independent variable. 85 85 80 80 I) OJ lg 75 E 75 2 70 2 7D 0 E 65 E 65 Ha d) I 5 60 8 60 55 55 600 800 1000 1200 1400 600 O Pricecsl @O 85 . . . 85 80 . 80 I) . d) E 75 . 75 u: 70 VI 70 ' E 5 65 a 3'3 65 o 8 50 S 60 55 55 I I I i I 600 800 1000 1200 1400 600 O Pncecsi (30 (b) What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? 0 There appears to be a negative linear relationship between price ($) and overall score. Q There appears to be a positive linear relationship between price (1;) and overall score. 0 There appears to be no noticeable relationship between price {$) and overall score. (c) Use the least squares method to develop the estimated regression equation. (Round your numerical values to three decimal places). y: (d) Provide an interpretation of the slope of the estimated regression equation. 0 The slope gives the change in the price for every one point increase in the overal O The slope gives the change in the price for every one point decrease in the overa O The slope gives the change in the overal! score for every one dollar increase in tl O The slope gives the overall score when the price is $0. 0 The slope gives the price when the overall score is 0. (e) Suppose the price for another laptop that Consumer Reports tested was $1,250. Predict the overall score for this laptop using the estimated regression equation developed in part (c). (Round your answer to one decimal place.) \\