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Tire Inflation: Underinflated or overinflated tires can increase tire wear and decrease gas mileage. A manufacturer of a new tire tested the tire for gas
Tire Inflation: Underinflated or overinflated tires can increase tire wear and decrease gas mileage. A manufacturer of a new tire tested the tire for gas mileage (miles per gallon) at different pressures (pounds per square inch). A: Linear line of best fit B. Quadratic (second order) line of best fit OO o O O 34 OO MILEAGE MLG O O 30 0 0 30 31 36 32 33 34 35 36 30 31 32 33 34 35 PRESS_X PRESS Call : 29. What is the response variable(s) in this Im(formula = MLG ~ I(PRESS^2) + PRESS) model? Residuals: Min 10 Median 3Q Max -1.8286 -0.4571 0.2280 0.6393 1.3750 30. What is the value (not the p-value) of the Coefficients: omnibus test of model utility - the test that the Estimate Std. Error t value Pr(>Itl) model must pass to continue? (Intercept) -1.051e+03 9.262e+01 -11.35 2.06e-07 *#* I(PRESS/2) -1. 006e+00 8.524e-02 -11.80 1.38e-07 *#* PRESS 6. 619e+01 5.628e+00 11.76 1.43e-07 * * * Signif. codes: 0 '***' 0.001 ***) 0.01 '*' 0.05 ' . ' 0.1 ' ' 31. Which 'line of best fit' matches the model? Residual standard error: 1.105 on 11 degrees of freedom Multiple R-squared: 0.9277, Adjusted R-squared: 0.9146 F-statistic: 70.62 on 2 and 11 DF, p-value: 5.295e-07 32. What percentage of the variance in y is accounted for in this model? 33. Which statistic tells you, for each of the two X variables (x, x2), if they are important individually in predicting y
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