The following information is for the next two questions. A stock had the following annual returns: 5.94%, 1.55%, -1.79%, and 13.56%. What is the stock's expected return? (Show your answer to four decimals, in decimal format. Example: 12.34% should be listed as .1234)

A stock has an expected return of 15.7% and a standard deviation of 11.4%. What is the upper range of the 99% confidence interval for this stock? (Show your answer to the nearest four decimals in decimal format, example 12.34% should be 0.1234)