Q4) A stock has an expected return of 18.82% and a standard deviation of 14.04%. For this stock, what are the: a) Upper range of 68% confindence interval (0.5 points)

b) Lower range of 68% confindence interval: (0.5 points)

c) Upper range of 95% confindence interval: (0.5 points)

d) Lower range of 95% confindence interval: (0.5 points)

e) Upper range of 99% confindence interval: (0.5 points)

f) Lower range of 99% confindence interval: (0.5 points)

Answer all questions or I will downvote.