Hi, I was not very familiar with the simple linear model and am confused about the following questions.

Could you please take a look at my explanations, and tell me if I understand each question correctly?

02 1 Point When asked to state the simple linear regression model, a student wrote it as follows: E(y) = 50 + 51331:, + 12 Do you agree? G) No. 04 1 Point According to our discussion, Z Ti : 0 where 'r'i are the model residuals of a simple linear regression model tted to a set of n cases using leastsquares. Is it also true that Zr 81' : 0 G) No, it is not correct that Ei Er = 0. 05 1 Point We want to fit a linear regression between speed (at) (mph) and the distance (y) taken to stop (ft) from measurements from a groups of cars. The following statistics are available from the cars data set in the R datasets library: SXX = 243?; EJQ = 1370 SYY : Says 37)? : 32538.98 r'Xy = 0.807 The estimated slope ,81 is given by: (9 3.93