1- In a regression, the variable of interest is also known as which of the following? Mark all that apply. (A) Independent variable (B) Dependent variable (C) Y variable (D) Response variable (E) Regressed variable 2- Which of the following statements regarding regression is TRUE? Mark all that apply a- Simple Regression uses only one explanatory variable b. Multiple regression uses only one explanatory variable Both Simple Regression and Multiple Regression are Linear Regressions d- Multiple Regression uses more than one explanatory variable E- Only Simple Regression is a Linear Regression 3- When is the t-statistic appropriate to use over the Z-statistic? (A) When the population standard deviation is unknown, but the sample standard deviation is known (B) When the population mean and standard deviation are both known. (C) When the sample standard deviation is unknown but the population standard deviation is known (D) When the sample size is too large for a z-statistic to handle. 4. If given a confidence level of 90%, what is the corresponding value of the level of significance? a-0.20 b-0.90 C-0.10 d-0.05