The F-test for multiple regression is significant if at least one of the t-test results is significant. True or False Collinearity concerns the correlation among independent variables only and does not consider correlation with the dependent variable. True or False When a t-test result for slope is statistically significant: A. the P-value is greater than 5%. B. the t-stat is close to 0. C. the confidence interval for population slope ranges from negative to positive (or + to -). D. the population slope is probably NOT zero. Adjusted r-squared is adjusted for: A. collinearity among independent variables B. the number of dependent variables C. the number of independent variables D. all of the above