In Exercise 11.2, which variables make a significant contribution to the prediction of
Optimism as judged by the test on their slopes?
In Exercise 11.2,

Model Summary Adjusted R Square Std. Error of the Estimate Model R Square 321 103 099 3.0432 a. Predictors: (Constant), relinvol, relinf, relhope ANOVAb Sum of Squares Mean Square Model df Sig. 211413 9.261 22828 00 l Regression Residual Total 5519.754 6153.993 596 599 a. Predictors (Constant), relirvol, relinf, relhope b. Dependent Variable: optimism Coefficients Unstandardized Standardized Coefficients Coefficents Model Std. Erro Beta Sig. lerance (Constant) relhope -1.895 428 512 102 107 116 -3.702 4.183 666 3 199 204 457 -033 -682 495 a Dependent Variable: optimism