A multiple regression is run with three explanatory variables, X1, X2, and X3. The p-values of their three regression coefficients turn out to be 0.07, 0.02, and 0.35, respectively, the R-square value...

A multiple regression is run with three explanatory variables, X1, X2, and X3. The p-values of their three regression coefficients turn out to be 0.07, 0.02, and 0.35, respectively, the R-square value for the regression is 0.73, and the standard error of estimate is 27.49. Which of the following will definitely be true if the regression is run againwithout X3?