Problem: There is 40% chance that the value of a company's stock goes up by 75 USD and 40% chance that it will not change and 20% chance that it will go down by 30 USD. Plot the probability distribution of average return on this stock for 80 trading days. What is the value of your expected return assuming that the number of trading days is sufficiently large? In plain English, explain what it means to have this value of expected return.
Please answer in R studio