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Suppose an environmental agency would like to investigate the relationship between the engine size of sedans and the miles per gallon (MPG) they get. The accompanying table shows the engine size in cubic liters and rated miles per gallon for a selection of sedans. Use this information to complete parts a through f PG for 9 car models Table of Engine Size and MPG с. ar Model A Model B Model C Model D Model E Model F Model G Model H Model I Engine Size MPG 26 30 26 20 23 2.3 2.1 2.5 3.3 3.6 2.1 2.3 2.1 3.7 19 32 MPG Engine Size ne Size 25 28 20

a. Construct a scatter plot for these data. Choose the correct graph below. A. OC. 1.9 1.9 19 32 19 32 Engine Size Engine Size MPG MPG b. Calculate the slope and y-intercept for the regression equation The slope is b- (Round to three decimal places as needed.) The y-intercept is a (Round to three decimal places as needed.)

c. Provide an interpretation for the value of the slope. Because the slope is negative, it can be concluded that a one cubic liter increase in engine size will decrease the miles per gallon by an average of 4.680 miles per gallon. Round to three decimal places as needed.) d. Predict the MPG for a sedan with a 2.5-iter engine. predicted MPG for a sedan with a 2.5-liter engine is Round to one decimal place as needed.) e. Calculate the SST SST- f. Partition the SST into the SSR and the SSE SSE SSR(Round to three decimal places as needed.) Round to three decimal places as needed.) Round to three decimal places as needed.)

Please double check answers. Thanks.

math   Statistics-And-Probability   
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Date sed on (a) 31 1 3D 오ケ 28 坪 26 25 29 23 20 2 abx38, 20 Co n --qn_c.ur.de--of 4. 8to 6.03s pa

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