Serum cholesterol levels were taken from a population of college students. The results were normally distributed. Males had a mean of 195 mg/dl and a standard deviation of 10 mg/dl. Females had a mean of 185 mg/dl and a standard deviation of 12 mg/dl.

According to the 68%-95%-99.7% rule, approximately what percent of males have a cholesterol level above 215 mg/dl?

• 2.5%
• 95%
• 5%
• 99.7%

According to the 68%-95%-99.7% rule, approximately what percent of females have a cholesterol level above 197 mg/dl?

• 2.5%
• 16%
• 68%
• 32%

What percentage of males have a cholesterol level above 195 mg/dl?

• 95%
• 50%
• 100%
• 99.7%

What percentage of females have a cholesterol level below 185 mg/dl?

• 95%
• 50%
• 100%
• 99.7%