5. Global has never paid a dividend over the past 4 years. Suppose Global's historical prices were as follows: 2019:$52.842020:$61.272021:$57.152022:$65.63 a) What is the arithmetic average of the returns? b) What is the geometric average of the returns? c) What is the standard deviation of the returns? d) Find the 68% and 95% confidence intervals. e) What does the 68% confidence interval tell us? Interpret what this means