please post how you come about the answer

Styles SULISTIVILY Pill all I U ab XX ARVAVALT Styles Pane Sign Consider the returns for the past 5 months below (returns are in decimals). These past monthly returns are drawn from identical and independent distributions that are the same as those of monthly returns over the next year. 0.04 -0.03 0.05 0.09 -0.02 Calculate the expected return over the next month (as a percent). (b) Calculate the standard deviation of returns over the next month (as a percent). (Round your answer to two decimal places.)