please use R

Please answer the following questions and submit both R codes and the results. Make all results reproducible. (a) Generate a random sample from standard normal distribution with size n = 200 and draw a histogram. (b) Generate a random sample from standard normal distribution with size n = 200 and calculate sample mean, sample variance, and sample median. (c) Define a function which returns sample mean, sample variance and sample median as a list with an input of a vector (d) Generate a random sample from t distribution (df=2) with size n=200 and draw a histogram. (e) Generate a random sample from t distribution (df=2) with size n = 200, and use (c) to calculate sample mean, sample variance, and sample median. (f) Repeat (e) 1,000 times and draw histograms for sample mean and sample median, respectively