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Tire pressure (psi) and mileage (mpg) were recorded for a random sample of seven cars of the same make and model. The extended data table (left) and fit model report (right) are based on a quadratic model   What is the predicted average mileage at tire pressure x = 31?

Tire pressure (psi) and mileage (mpg) were recorded for a random sample of seven cars of the same make and model. The extended data table (left) and fit model report (right) are based on a quadratic model   What is the predicted average mileage at tire pressure x = 31?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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Tire pressure (psi) and mileage (mpg) were recorded for a random sample of seven cars of the
same make and model. The extended data table (left) and fit model report (right) are based on a
quadratic model

 

What is the predicted average mileage at tire pressure x = 31?

Part 2. Polynomial Regression Tire pressure (psi) and mileage (mpg) were recorded for a random sample of seven cars of the same make and model. The extended data table (left) and fit model report (right) are based on a quadratic model. 1 23+567 4 Lower 95% Upper 95% Mileage Pressure Pressure^2 Mean Mileage Mean Mileage 25.22 30.64 31.77 34.98 35.78 34.56 30.91 23.93 29 32 36 38 37 33 26 30 31 ललै लै ल 38 32 33 34 35 36 900 961 1024 1089 1156 1225 1296 Summary of Fit RSquare RSquare Adj Root Mean Square Error Mean of Response Observations (or Sum Wgts) 35.09 Analysis of Variance 38.30 39.36 37.87 34.23 29.35 1.118034 33 7 Source Model Error C. Total Parameter Estimates Sum of DF 2 Squares Mean Square 111.00000 5.00000 6 116.00000 55.5000 1.2500 4 F Ratio 44.4000 Prob > F 0.0019" Term Estimate Std Error t Ratio Probolti -1199.929 132.5406 -9.05 0.0008* Intercept 75.214286 8.053948 Pressure Pressure^2 -1.142857 0.121988 9.34 0.0007" -9.37 0.0007*
Transcribed Image Text:Part 2. Polynomial Regression Tire pressure (psi) and mileage (mpg) were recorded for a random sample of seven cars of the same make and model. The extended data table (left) and fit model report (right) are based on a quadratic model. 1 23+567 4 Lower 95% Upper 95% Mileage Pressure Pressure^2 Mean Mileage Mean Mileage 25.22 30.64 31.77 34.98 35.78 34.56 30.91 23.93 29 32 36 38 37 33 26 30 31 ललै लै ल 38 32 33 34 35 36 900 961 1024 1089 1156 1225 1296 Summary of Fit RSquare RSquare Adj Root Mean Square Error Mean of Response Observations (or Sum Wgts) 35.09 Analysis of Variance 38.30 39.36 37.87 34.23 29.35 1.118034 33 7 Source Model Error C. Total Parameter Estimates Sum of DF 2 Squares Mean Square 111.00000 5.00000 6 116.00000 55.5000 1.2500 4 F Ratio 44.4000 Prob > F 0.0019" Term Estimate Std Error t Ratio Probolti -1199.929 132.5406 -9.05 0.0008* Intercept 75.214286 8.053948 Pressure Pressure^2 -1.142857 0.121988 9.34 0.0007" -9.37 0.0007*
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