Q8) A stock has an expected return of 15.61% and a standard deviation of 12.67%. Compute the following for this stock:

a) Upper range of 68% confindence interval : (0.5 points)

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

e) 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)