Online banking A national survey indicated that 30% of adults conduct their banking online. It also found that 40% are younger than 50, and that 25% are younger than 50 and conduct their banking online. Make a probability table.

Chapter 1 Throughout the semester, we will learn methods to address questions such as these. To get started, we need to learn some basic vocabulary. -Subject: entities that we measure in a study -Variable: any characteristic that is observed for the subject in a study -Population: a set of all subjects of interest -Sample: the set of subjects for which we have data **We want to use the sample’s data to make an inference about the population.** -Statistic: a numerical summary of the sample (known information) -Parameter: a numerical summary of the population (unknown information) There are 3 major components to Statistics: 1. Design of the Study • What is the research question • What is/are the population of interest • What is the