Question 2 Suppose that you have a multiple regression with three explanatory variables. Which of the following are accurate statements of the ANOVA alternative hypothesis? Check all that apply. The regression is useful. The regression is significant. The regression is insignificant. All slope coefficients equal zero. The regression is not useful At least one slope coefficient is non-zero.

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ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
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Chapter1: Equations And Graphs
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Question 2
Suppose that you have a multiple regression with three explanatory variables. Which of the
following are accurate statements of the ANOVA alternative hypothesis? Check all that apply.
O The regression is useful.
O The regression is significant.
O The regression is insignificant.
O All slope coefficients equal zero.
O The regression is not useful
O At least one slope coefficient is non-zero.
Question 3
If R2=.68, bo=15, bq=30 and b2=-50 in a multiple regression with two explanatory variables (X1 and
X2) and both explanatory variables are significant and the ANOVA p-value is 0.03, answer the
following question:
Predict the value of Y when X1=6 and X2=2. Assume both of those values are within the respective
sample ranges.
D
Question 4
If R2=.68, bo=15, bq=30 and b2=-50 in a multiple regression with two explanatory variables (X1 and
X2) and both explanatory variables are significant and the ANOVA p-value is 0.03, answer the
following question:
If the units on Y are dollars and the units on X1 are hours, how many more dollars are predicted
when the value of X1 increases by 3 hours, holding the value of X2 constant?
Transcribed Image Text:Question 2 Suppose that you have a multiple regression with three explanatory variables. Which of the following are accurate statements of the ANOVA alternative hypothesis? Check all that apply. O The regression is useful. O The regression is significant. O The regression is insignificant. O All slope coefficients equal zero. O The regression is not useful O At least one slope coefficient is non-zero. Question 3 If R2=.68, bo=15, bq=30 and b2=-50 in a multiple regression with two explanatory variables (X1 and X2) and both explanatory variables are significant and the ANOVA p-value is 0.03, answer the following question: Predict the value of Y when X1=6 and X2=2. Assume both of those values are within the respective sample ranges. D Question 4 If R2=.68, bo=15, bq=30 and b2=-50 in a multiple regression with two explanatory variables (X1 and X2) and both explanatory variables are significant and the ANOVA p-value is 0.03, answer the following question: If the units on Y are dollars and the units on X1 are hours, how many more dollars are predicted when the value of X1 increases by 3 hours, holding the value of X2 constant?
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