The serum cholesterol levels for men in one age group are normally distributed with a mean of 178.2 and a standard deviation of 40.7. All units are in mg/100 mL. Find the two levels that separate the top 9% and the bottom 9%. Answer 1. 123.6 mg/100mL and 232.8 mg/100mL 2. 161.5 mg/100mL and 194.9 mg/100mL 3. 165.2 mg/100mL and 191.22 mg/100mL 4. 107.4 mg/100mL and 249.0 mg/100mL