In Exercises 5–12, identify whether the given value is a statistic or a parameter.
Smart Phones In a Pew Research Center poll, a sample of adults in the United States was obtained, and it was found that 72% of them own smart phones.

In Exercises 37–44, answer the given questions, which are related to percentages.

Percentages in Advertising In an actual ad for the Club, a device used to discourage car thefts, it was stated that “The Club reduces your odds of car theft by 400%.” What is wrong with this statement?

Parameter and Statistic In a Citrix Security survey of 1001 adults in the United States, it was found that 69% of those surveyed believe that having their personal information stolen is inevitable. Identify the population and sample. Is the value of 69% a statistic or a parameter?

E-Cigarette Survey In a survey of 36,000 adults, 3.7% said that they regularly use E-cigarettes (based on data from the National Center for Health Statistics)

c. What is the level of measurement of the value of 3.7%? (nominal, ordinal, interval, ratio)

In Exercises 5–12, identify whether the given value is a statistic or a parameter.

Drivers According to the Federal Highway Administration, there are 212 million licensed drivers in the United States.

In Exercises 13–20, determine whether the data are from a discrete or continuous data set.

Fraud Detection While monitoring Internet traffic in order to detect fraudulent activity, a researcher records the interarrival times (sec) between incoming Internet queries.

In Exercises 13–20, determine whether the data are from a discrete or continuous data set.

Students Your statistics professor records the number of students who pass each of her courses.

In Exercises 13–20, determine whether the data are from a discrete or continuous data set.

Statistics Classes In each of her classes, a statistics professor records the number of students who earned a grade of A.

In Exercises 21–28, determine which of the four levels of measurement (nominal, ordinal, interval, ratio) best describes the given data.

College Students In order to better plan for the incoming freshman class, a college dean asks each newly admitted student to identify their likely major (physics, business, math, psychology, engineering, law, etc.).