Quiz 7

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Southern New Hampshire University *

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Statistics

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Nov 24, 2024

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Submission View You have successfully submitted the Module Seven quiz. Please review the learning resources or reach out to your instructor with any questions. Question 1 3 / 3 points What is the purpose of performing the overall F-test? Select one. Question options: It is used to estimate the sum of squared residuals. It is used to test if a specific predictor variable is significant in a regression model. It is used to test whether at least one of the predictor variables is significant in a regression model. It is used to test two regression models to test whether additional predictor variables should be added in the model. Question 2 3 / 3 points The statsmodels ols() method is used on a cars dataset to fit a multiple regression model using Quality as the response variable. Speed and Angle are used as predictor variables. The general form of this model is: If the level of significance, alpha, is 0.10, based on the output shown, is Angle statistically significant in the multiple regression model shown above? Select one. A text version of this output is available .
Question options: Null Hypothesis Alternative Hypothesis P-value = 0.000 Since the P-value is less than the level of significance, alpha, reject the null hypothesis. Conclude that the estimate for the Angle parameter is non-zero. Therefore, Angle is statistically significant in the multiple regression model. Null Hypothesis Alternative Hypothesis P-value = 4.0280 Since the P-value is greater than the level of significance, alpha, do not reject the null hypothesis. Conclude that the estimate for the Angle parameter is zero. Therefore, Angle is not statistically significant in the multiple regression model. Null Hypothesis Alternative Hypothesis P-value = 0.000 Since the P-value is less than the level of significance, alpha, do not reject the null hypothesis. Conclude that the estimate for the Angle parameter is zero. Therefore,
Angle is not statistically significant in the multiple regression model. Null Hypothesis Alternative Hypothesis P-value = 4.0280 Since the P-value is greater than the level of significance, alpha, reject the null hypothesis. Conclude that the estimate for the Angle parameter is non-zero. Therefore, Angle is statistically significant in the multiple regression model. Question 3 3 / 3 points The statsmodels ols() method is used on an exam scores dataset to fit a multiple regression model using Exam4 as the response variable. Exam1 , Exam2 , and Exam3 are used as predictor variables. The general form of this model is: If the level of significance, alpha, is 0.10, based on the output shown, is Exam1 statistically significant in the multiple regression model shown above? Select one. A text version of this output is available .
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