:GISE S. (a) For the given it pairs of observation data (11, pl], ..., (In, ya}, use the least squares method to nd the values of parameters or and ,3 in the linear regression model 3: = or + ts - f), where E is the sample mean of X. :b} Based on the given data x-3-3-2-1011 223 _v 114 III} 111 ll]?r 1|]? 1H3 1'34 l 1|]3 1111 write R code to calculate the coefcients (I and :3. {c} Use R function 1m to carry.r out a linear regression analysis. Use R functions con f int and predict to nd a 95% condence interval for the slope of the regression line (Le. parameter ,3), and for the mean value of 1' when a: = 1