Questions: A survey conducted by a reputable marketing agency found that 248 of 1000 adults 19 years of age or older confessed to bringing and using their cell phone every trip to the bathroom (confessions included texting and answering phone calls). Complete parts (a) through (f) below. What is the sample in this study? What is the population of interest? Determine the sample in this study. Select the correct choice below and, if necessary, fill in the answer box within your choice. - The sample is all adults. - The sample is all adults with a cell phone. - The sample is the adults 19 years of age or older. (Type a whole number.) - The sample is all adults 19 years of age or older.

Solution Steps

To determine the sample in this study, we need to identify the subset of the population that was actually surveyed. The problem states that 248 out of 1000 adults confessed to using their cell phone on every trip to the restroom. Therefore, the sample is the 1000 adults who were surveyed.

In this study, the sample consists of the individuals who were surveyed. The total number of adults surveyed is given as \(1000\). Therefore, the sample can be expressed as:

\[ \text{Sample} = 1000 \text{ adults 19 years of age or older} \]

The population of interest refers to the entire group that the study aims to understand. In this case, it includes all adults who are \(19\) years of age or older. Thus, we can denote the population as:

\[ \text{Population} = \text{All adults } (19 \text{ years or older}) \]

Final Answer