8.3 Comparing marijuana use. According to the 2011–2012 National Survey on Drug Use and Health, among young adults aged 18–25 years, approximately 29.2% of young adults in Arizona, approximately 34.4% of young adults in Michigan, and approximately 30.4% of young adults in Virginia used marijuana in the past year. Which of the following is true?
(a) We cannot use these percentages to compare marijuana use by young adults in these states because we do not know how many young adults used marijuana in the past year in each state.
(b) We cannot use these percentages to compare marijuana use by young adults in these states because we do not know how many young adults live in each state.
(c) We can use these percentages to compare marijuana use by young adults in these states because we are given rates.
(d) None of the above is true.