Please answer and show work :)

13. What is the new R2 and what does it mean? 14. In the multiple regression, provide a test of the significance of course characteristics on the course evaluations. (hint: if you keep the order of the variables I wrote in part. 8 the same, the null of this test would HO : B5=B6=0, meaning in your MLRM you should check the significance of intro and onecredit at the same time. You should run a F-Test. Once with these variables and once without them and create your restricted and unrestricted models) VERY IMPORTANT: You should calculate and provide the FSTAT on PAPER (even if you use RStudio to get the Fstat, you should confirm it again. I want you to do it once to learn it) 15. What is the "overall" Fstat and the conclusion in the MLRM (the model of part 8). What does this mean? Explain? VERY IMPORTANT: You should calculate and provide the FSTAT on PAPER. Q. [1. score, there is no unit, it's betw 15 Acourse.eval is the teaching evaluation score, there is no unit, it s betwhe the is no unit. wheouty is 6 students rating the instructors oppearance, there is no unit, afemate is the instructors gender 1 if female 8 if nale, there is no with a mean of 48.37 Foge is the professor's age, the unit is years, whth a mean of 48.37 means Aminority is if the instructor is white or not, 1 means not white 0 means intro zintro is if the course is an introductory course, 1 means it is an intro of 1 means it is of plot(beouty, course_eval) regl