MAKING SURE THESE ANSWERS ARE CORRECT BECAUSE IM NOT SURE!!! value 10.00 points

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MAKING SURE THESE ANSWERS ARE CORRECT BECAUSE IM NOT SURE!!!

value 10.00 points The following table lists Major League Baseball's (MLB's) leading pitchers, their earned run average (ERA), and their salary (in $1,000,000s) for 2008 Salary ERA (in $1,000,000s) 2.21 2.28 2.44 2.55 2.73 2.55 2.24 2.80 2.84 2.51 J. Santana T. Lincecum C. Sabathia R. Halladay J. Peavy D. Matsuzaka R. Dempster B. Sheets C. Hamels 17.0 4.0 0.3 5.0 6.0 4.9 8.4 6.3 11.6 0.3 SOURCE: http://www.ESPN.com lick here for the Excel Data File a-1. Use Excel to estimate the model. Salary 0 1 ERA + . (Negative amounts should be indicated by a minus sign. Enter your answers in millions rounded to 2 decimal places.) Sal ary = 13.18 2.70 ERA a-2. Interpret the coefficient of ERA. A one-unit increase in ERA, predicted salary decreases by $2.70 million A one-unit increase in ERA, predicted salary increases by $2.70 million A one-unit increase in ERA, predicted salary decreases by $10.47 million A one-unit increase in ERA, predicted salary increases by $10.47 million

Explanation / Answer

Using r software

Store values of ERA in X and values ofSalary in Y

use codes

lm(Y~X)

We get

b0= 13.18

b1= - 2.70

So your equation is correct.

Interpretation:

A one unit Increase in ERA , predicted salary decreases by $ 2.7 million

Interpretation is correct

Puting all X values in equation

All the computed values of predicted y are correct.

All the values of residuals are correct.

Only check the value of 5th residual

That is of R Halladay

I am coming with the value 5.809

And yours is 0.20

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