Assume that historical returns and future returns are independently and identically distributed and drawn from the same

Question:

Assume that historical returns and future returns are independently and identically distributed and drawn from the same distribution.
a. Calculate the 95% confidence intervals for the expected annual return of four different investments included in Tables 10.3 and 10.4 (the dates are inclusive, so the time period spans 86 years).
b. Assume that the values in Tables 10.3 and 10.4 are the true and volatility (i.e., estimated without error) and that these returns are normally distributed. For each investment, calculate the probability that an investor will not lose more than 5% in the next year.
c. Do all the probabilities you calculated in part (b) make sense? If so, explain. If not, can you identify the reason?

Expected Return
The expected return is the profit or loss an investor anticipates on an investment that has known or anticipated rates of return (RoR). It is calculated by multiplying potential outcomes by the chances of them occurring and then totaling these...