1. According to a National Public Radio poll, 46% of American school principals believe that students pay little or no attention to sex education provided in schools (http://www.npr.org/programs/morning/features/2004/jan/kaiserpoll/principalsfinal.pdf). Suppose that this result is true for the current population of American school principals..

1. Find the probability that in a random sample of 11 American school principals, exactly 3 believe that students pay little or no attention to sex education taught in schools.
2. At most 3 students pay little or no attention to sex education taught in school.
3. At least 3 student pay little or no attention to sex education taught in school.