Any help with these questions is greatly appreciated: R code or handwritten

Exercise 1. Consider a Normal random sample X1,,XniidN(0,e) where n=10 and the parameter of interest is R. A realisation of the random sample gives: {x}={7.13,8.64,1.33,5.52,7.38,22.15,7.68,3.36,3.46,11.2} The mean of the squared values of x is: x=n1i=1nxi2=91.05 1 (a) Construct the method of moments estimator for , and calculate its numerical value given the above information. (b) Derive the likelihood and the log-likelihood functions for . (c) Derive the score and observed Fisher information functions for