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# Homework Assignment #9 complete solution correct answer key

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Homework Assignment #9 complete solution correct answer key

All calculations should be done in Word using Equation Editor and all charts and graphs should be done in Excel.

Use the output below to answer the following questions.

A baseball analyst would like to develop a model to predict the number of wins during the 2011 baseball season.  The analyst collected several variables: Wins, ERA, Runs Scored, Hits Allowed, Walks Allowed, Errors and Saves from 30 professional baseball teams.  The data is shows below.

1)

Fill in the tables with the missing values? (You should have 13 different values you need to find)

2)

What is the correlation of determination?

3)

What is the adjusted r2?

4)

What is the standard error of the estimated regression line?

5)

What is the estimated regression equation?

6)

Use the estimated regression equation to predict Wins when ERA 5.42, Runs Score is 938, Hits Allowed is 1596 and Saves are 30.

7)

Calculate the residual for the observed described in number 6), if the original Wins for that observation were 72.

8)

What is the hypothesis scenario?

9)

Is there evidence of a significant relationship between the OVERALL Wins and the independent variables?  Use alpha = .05.  (State the p-value and the conclusion)

10)

Which of the independent variables are significant predictors of Wins?  Which ones do you want to include in your model?  Use alpha = .05 (Hint: run a t test on each slope)

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## [Solved] Homework Assignment #9 complete solution correct answer key

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• Submitted On 29 Jul, 2015 10:00:51
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Homework Assignment #9 Name: __________________________ All calculations should be done in Word using Equation Editor and all charts and graphs should be done in Excel. Use the output below to answer the following questions. A baseball analyst would like to develop a model to predict the number of wins during the 2011 baseball season. The analyst collected several variables: Wins, ERA, Runs Scored, Hits Allowed, Walks Allowed, Errors and Saves from 30 professional baseball teams. The data is shows below. Regression Statistics Multiple R 0.9504 Observations 30 ANOVA df SS MS F Significance F Regression 4 2611.92 652.98 58.3122 .000000000259 Residual 25 279.95 11.198 Total 29 2891.87 Variable Coefficient Standard Error T value P value Lower 95% Upper 95% Intercept 74.7771 16.7626 4.4610 .00002 ?? ?? ERA -12.3206 3.2066 ?? .0007 -18.9247 -5.7166 Runs Scored .08433 .0079 10.6414 .00000009 .0680 .1007 Hits Allowed .0107 .0163 ?? .5176 ?? ?? Saves .2731 .1203 ?? .0321 .0254 .5208 1) Fill in the tables with the missing values? (You should have 13 different values you need to find) Total Degree of freedom = n-1 = 29 Residual Degree of freedom = Total Degree of freedom – Residual Degree of freedom = 29-4=25 Residual SS = Total SS – Regress...
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