1. Identify the population and the sample in the following study. A study of the dietary habits of 20,000 men was conducted to find a link between high intakes of dairy products and prostate cancer. (Source: Harvard School of Public Health) 2. Determine whether the numerical value is a parameter or a statistic. Explain your reasoning. (a) A survey of 1000 U.S. adults found that 40% think that the Internet is the best way to get news and information. (Source: Rasmussen Reports) (b) At a college, 90% of the members of the Board of Trustees approved the contract of the new president. (c) A survey of 733 small business owners found that 17% have a current job opening. (Source: National Federation of Independent Business) 3. Determine whether the data are qualitative or quantitative. Explain your reasoning. (a) A list of debit card pin numbers (b) The final scores on a video game 4. Determine whether the study is an observational study or an experiment. Explain. (a) Researchers conduct a study to determine whether body mass index (BMI) influences the frequency of migraines. To conduct the study, researchers asked 162,576 people for their BMIs and the numbers of migraines they have per month. (Source: JAMA Internal Medicine) (b) Researchers conduct a study to determine whether taking a multivitamin daily decreases the risk of major cardiovascular events among men. To perform the study, researchers studied 14,641 men and had one group take a multivitamin daily and had another group take a placebo daily. (Source: The Journal of the American Medical Association)