Question 5 1.5 pts Given a simple linear regression model, the value of the estimated mean response is different from the value of the predicted response at a specific value of X. O True O False Question 6 1.5 pts The Box-Cox transformation is applied to the predicting variable and response variable of a simple linear regression model if the normality assumption does not hold. O True O False Question 7 1.5 pts R-squared is the only measure used to check if a simple linear regression model is a good fit to the data. O True O False Question 8 1.5 pts The F-test in ANOVA compares the between-group variability to the within-group variability. O True O False Question 9 1.5 pts In ANOVA, the variance of the response variable is assumed to be the same across the LaTex: k populations. O True O False Question 10 1.5 pts In the ANOVA test for equal means across groups, the null hypothesis is that all means are equal, and the alternative hypothesis is that all means are different. O True O False Question 11 1.5 pts In a linear regression model without intercept, a qualitative variable with LaTex: k categories is represented by LaTex: k dummy variables. O True O False Question 12 1.5 pts When conducting residual analysis for a simple linear regression model that was fitted to observational study data, we check for independence and not for lack of correlation of the residuals O True O False