5. Private Schools The proportion of students in private schools is around 11%. A random sample of 450 students from a wide geographic area indicated that 55 attended private schools. Estimate the...

5.

Private Schools
The proportion of students in private schools is around 11%. A random sample of

450 students from a wide geographic area indicated that 55 attended private schools. Estimate the true proportion of students attending private schools with 95% confidence. How does your estimate compare to 11%?

Source: National Center for Education Statistics (www.nces.ed.gov).

6.

Belief in Haunted Places
A random sample of 205 college students was asked if they believed that places could be haunted, and 65 of them responded yes. Estimate the true proportion of college students who believe in the possibility of haunted places with 99% confidence. According to
Time
magazine, 37% of Americans believe that places can be haunted.

Source:
Time
magazine, Oct. 2006.