MATH 302 Homework lesson 1 attemp 3.

MATH 302 Homework lesson 1 attemp 3. What is the sampling method used in the following scenario? The librarian at a public library wants to determine what proportion of the library users are children. The librarian has a tally sheet on which she marks whether books are checked out by an adult or a child. She records this data for every fourth patron who checks out books. Systematic What is the sampling method used in the following scenario? The marketing manager for an electronics chain store wants information about the ages of its customers. Over the next two weeks, at each store location, 100 randomly selected customers are given questionnaires to fill out asking for information about age, as well as about other variables of interest. Simple Random Stratified What is the sampling method used in the following scenario? A woman in the airport is handing out questionnaires to travelers asking them to evaluate the airport’s service. She does not ask travelers who are hurrying through the airport with their hands full of luggage but instead asks all travelers who are sitting near gates and not taking naps while they wait. Convenience What kind of data is "the colors of the houses around the park" in the scenario? A study was done to determine the age, the number of times per week, and the duration (amount of time) of residents using a local park in San Antonio, Texas. The first house in the neighborhood around the park was selected randomly, and then the resident of every eighth house in the neighborhood around the park was interviewed. Qualitative What is the sampling method used in the following scenario? A teacher wants to know if her students are doing homework, so she randomly selects rows two and five and then calls on all students in row two and all students in row five to present the solutions to homework problems to the class. Cluster Which of the following correctly describes the relationship between a sample and a population? A sample is a group of subjects selected from a population to be studied What is the term for a characteristic or attribute that can assume different values? Variable A Lake Tahoe Community College instructor is interested in the mean number of days Lake Tahoe Community College math students are absent from class during a quarter. X = number of days a Lake Tahoe Community College math student is absent In this case, X is an example of : Variable A Lake Tahoe Community College instructor is interested in the mean number of days Lake Tahoe Community College math students are absent from class during a quarter. X = number of days a Lake Tahoe Community College math student is absent The instructor’s sample produces a mean number of days absent of 3.5 days. This value is an example of a: Statistic Ski resorts are interested in the mean age that children take their first ski and snowboard lessons. They need this information to plan their ski classes optimally. Identify the sample. A subgroup of these