please explain this to me step by step so i can make it by myself

QUESTION 3 Calculate the average return of the following returns Date Return 11/01/2018 7.07% 11/14/2018 2.84% 12/01/2018 -5.11% 12/14/2018 6.796 NOTE: Enter the PERCENTAGE number rounding to two decimals. If your decimal answer is 0.034576, your answer must be 3.46. DO NOT USE the % sign QUESTION 4 What would be the upper bound of the 95% confidence prediction interval for the following returns: HINT: First calculate the standard deviation Date Return 11/01/2018 9.2396 11/14/2018 -1,49% 12/01/2018 3.48% 12/14/2018 6.0396 NOTE: Enter the PERCENTAGE number rounding to two decimals. If your decimal answer is 0.034576, your answer must be 3.46. DO NOT USE the % sign to me all answers