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Determine whether the number describes a population parameter or a sample statistic. Explain your reasoning. In a survey of 650 teachers, \(16 \%\) reported that there have been instances of bullying in their class.

Determine whether the number describes a population parameter or a sample statistic. Explain your reasoning. A survey of 2008 U.S. adults found that \(80 \%\) think that the militant group known as ISIS is a major threat to the well-being of the United States. (Source: Pew Research Center)

Determine whether the number describes a population parameter or a sample statistic. Explain your reasoning. In a recent year, the average math score on the ACT for all graduates was 20.6. (Source: \(A C T\), Inc.)

Writing Write an essay about the importance of statistics for one of the following. \- A study on the effectiveness of a new drug \- An analysis of a manufacturing process \- Drawing conclusions about voter opinions using surveys

Exercise and Cognitive Ability A study of 876 senior citizens shows that participants who exercise regularly exhibit less of a decline in cognitive ability than those who barely exercise at all. From this study, a researcher infers that your cognitive ability increases the more your exercise. What is wrong with this type of reasoning? (Source: Neurology)

Increase in Obesity Rates A study shows that the obesity rate among adolescents has steadily increased since 1988 . From this study, a researcher infers that this trend will continue in future years. What is wrong with this type of reasoning? (Source: Journal of the American Medical Association)