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A researcher wants to predict the finish position ( y)using the start position (x) in a car race. For 42 drivers in a second NASCAR race held in...

A researcher wants to predict the finish position ( y) using the start position (x) in a car race. For 42 drivers in a second NASCAR race held in 1997, the summary of the sample data is given below.

 

 

x y

mean 25.5 25.5

Standard

deviation 12.27 12.27

Correlation .285

 

(a).Calculate a regression equation with predicted by X. Show your

(b).Use the equation of the fitted line to predict when is .

(c). Find the coefficient of determination and give an interpretation of it in the context of the

 

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