Hemoglobin levels are usually 12-16g/100ml for women and 14-18g/100ml for men. If you have a sampling distribution of mean hemoglobun levels (collected from 60 hospitals) with a mean of 16g/100ml and a standard diviation of 2g/100ml, calculate the range of hemoglobin of hemoglobin levels that would include 60% of your sample mean.