Please use R or R Studio Code.

Data: library(faraway) Data(butterfat)

6. Data on the butterfat content of milk from Canadian cows of five different breeds can be found in the butterfat dataset. Consider only mature cows. (a) Plot the data and interpret what you see. (b) Test for a difference between the breeds.(c) Check the diagnostics for your model. (d) Produce a plot to check for differences in butterfat between breeds. Which pairwise differences are not statistically signifint