1. Which of the following represents a population and a sample from that population? * Fans at a concert who purchase t-shirts and fans at a concert who purchase soda * Teachers in a high school and members of the parent teacher group * Freshmen at St. Joseph's University and basketball players at St. Joseph's University * Residents of Albany, New York, and registered voters in Albany, New York 2. A population consists of _________________. * a subject of interest in a statistical problem * all items of interest in a sample * a subject of interest in a sample * all items of interest in a statistical problem 3. ABC Plumbing wants to understand its customers’ perceptions of the quality of the company’s plumbing service calls. They plan to survey a sample of its customer base. What will ABC need to do to ensure that their data is valid and reliable? * The survey must include items that ask customers about their plumbing experiences, the survey sample must include the first 15 customers off the customer database, and the survey method must be repeatable. * The survey must include items that ask customers to rate the friendliness of the receptionist, the survey must include all customers from the north side of the city, and the survey method must appeal to all respondents. * The survey must include items that ask customers to rate the appearance of the plumbing store, the survey must include all customers, and the survey method must include setting up a table outside the local dollar store. * The survey must include items that ask customers to rate the quality of plumbing service calls, the survey sample must represent all parts of the customer population, and the survey method must be repeatable. 4. The accompanying chart shows the numbers of books written by