Determine whether the underlined value is a parameter or a statistic.

1. Following the 2014 national midterm election, 18% of the governors of the 50 United States were female. 

2. The average score for a class of 28 students taking a calculus midterm exam was 72%.

3. In a national survey of 1300 high school students (grades 9 to 12), 32% of respondents reported that someone had bullied them at school. 

4. In a national survey on substance abuse, 9.6% of respondents aged 12 to 17 reported using illicit drugs within the past month.

5. Ty Cobb is one of Major League Baseball’s greatest hitters of all time, with a career batting average of 0.366. 

6. Only 12 men have walked on the moon. The average time these men spent on the moon was 43.92 hours. 

7. A study of 6076 adults in public rest rooms (in Atlanta, Chicago, New York City, and San Francisco) found that 23% did not wash their hands before exiting.

8. Interviews of 100 adults 18 years of age or older, conducted nationwide, found that 44% could state the minimum age required for the office of U.S. president.