b. Using α=0.05, test the significance of the population
coefficient of determination.
c. Construct a 95% confidence interval for the average MPG
of a 2.4-cubic liter engine. (lcl & ucl)
d. Construct a 95% prediction interval for the MPG of a
2.4-cubic liter engine. (lpl & upl)
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Suppose an environmental agency would like to investigate the relationship between the engine size of sedans, x, and the miles per gallon (MPG), y, they get. The accompanying table shows the engine size in cubic liters and rated miles per gallon for a selection of sedans. The regression line for the data is y = 37.7627 - 4.6067x. Use this information to complete parts a through d. Click the icon to view the table showing engine size and MPG for 9 car models. a. Calculate the coefficient of determination. R2 - (Round to three decimal places as needed.) Х Table of Engine Size and MPG- Car MPG 27 29 24 21 Model A Model B Model C Model D Model E Model F Model G Model H Modell Engine Size 2.4 2.2 2.5 3.3 3.6 2.2 2.4 2.2 3.7 24 28 24 30 20 Print Done
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