please explain step by step so i can do it by myself

1.28 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 9.23% 11/14/2018 -1.49% 12/01/2018 3.48% 12/14/2018 6.03% NOTE: Enter the PERCENTAGE number rounding to two decimals. If your decimal answer is 0.C be 3.46. DO NOT USE the % sign QUESTION 5