A stock has an expected return of 10.84% and a standard deviation of 14.27%. Compute the following for this stock (Please write all answers as percentages (e.g. .1234 should be written as 12.34):

Upper range of 68% confidence interval: %

Lower range of 68% confidence interval: %

Upper range of 95% confidence interval: %

Lower range of 95% confidence interval: %

Upper range of 99% confidence interval: %

Lower range of 99% confidence interval: %