The total cholesterol levels for women aged 20 to 30 years are normally distributed with µ=190 mg/dl and σ=40 mg/dl. A sample of 25 women in this age-group is randomly selected. What range of...

The total cholesterol levels for women aged 20 to 30 years are normally distributed with µ=190 mg/dl and σ=40 mg/dl. A sample of 25 women in this age-group is randomly selected. What range of cholesterol series is expected for the middle 99% of all sample means?