A statistics student is studying if there is arelationship between the price of a used car and thenumber of miles it has been driven. She collectsdata for 20 cars of the same model with differentmileage, and determines each car's price using aused car website. The analysis is given in thecomputer output.PredictorCoef SE Coef t-ratioConstant 24157.2 2164.12.965 0.046Mileage-0.1810.0245.377 0.000S = 3860.7 R-Sq = 68.0% R-Sq(Adj) = 67.5%Using the computer output, what is the equation ofthe least-squares regression line?O ŷ = -0.181 + 24157.2xO ŷ = 24157.2 - 0.181xO ý = 2164.1+ 0.024xO ý = 0.024 + 2164.1x

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Answered: A statistics student is studying if…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Engineers concerned about a tower's stability have done extensive studies of its increasing tilt. Measurements of the lean of the tower over time provide much useful information. The following table gives measurements for the years 1975 to 1987. The variable "lean" represents the difference between where a point on the tower would be if the tower were straight and where it actually is. The data are coded as tenths of a millimeter in excess of 2.9 meters, so that the 1975 lean, which was 2.9647 meters, appears in the table as 647. Only the last two digits of the year were entered into the computer. 80 83 86 75 76 77 78 647 649 660 672 79 81 82 84 85 678 693 701 703 717 722 729 747 (a) Plot the data. Consider whether or not the trend in lean over time appears to be linear. (Do this on paper. Your instructor may ask you to turn in this graph.) Year Lean (b) What is the equation of the least-squares line? (Round your answers to three decimal places.) y = X x + x x What percent of the…
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