A study indicates that in CA, 36% of people ages 17 to 26 have at least one tattoo.
You randomly sample 30 people in that age group. What is the likelihood that exactly 3 will have a tattoo?
You want to test the hypothesis that Bay Area students are less likely to have tattoos than the state average. You survey 10 Bay Area students and find that 2 of them have tattoos. How likely is it that you would get two students with tattoos, or fewer, in your study, if the proportion of Bay Area students with tattoos matches the state average?