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Author Question: The Pearson correlation between X1 and Y is r = 0.50. When a second variable, X2, is added to the ... (Read 27 times)

nummyann

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on: Jun 20, 2018
The Pearson correlation between X1 and Y is r = 0.50. When a second variable, X2, is added to the regression equation, we obtain R2 = 0.60. Adding the second variable increases the variability that is predicted by the regression equation for the Y scores by 36 - 25 = 11.
 
  Indicate whether the statement is true or false

Question 2

A researcher is evaluating a treatment that is expected to increase scores. If a one-tailed test with a = .05 is used, then the critical region consists of z-scores greater than 1.65.
 
  Indicate whether the statement is true or false


brittiany.barnes

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Reply #1 on: Jun 20, 2018
Answer to Question 1

False

Answer to Question 2

True


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