Question

in a survey conducted by a reputable marketing agency, 245 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.
b. the sample is the 1000 adults 19 years of age or older (type a whole number.)
c. the sample is all adults.
d. the sample is all adults 19 years of age or older.
determine the population of interest. select the correct choice below and, if necessary, fill in the answer box within your choice.
a. the population is the adults 19 years of age or older (type a whole number.)
b. the population is all adults.
c. the population is all cell - phone users.
d. the population is all adults 19 years of age or older.
(b) what is the variable of interest in this study? is it qualitative or quantitative?
the variable of interest is this variable is because

Explanation:

In statistical studies, the population is the entire group of individuals or objects that we are interested in studying. Here, the survey is about adults 19 years of age or older, so the population is all adults 19 years of age or older. The variable of interest is whether an adult 19 years of age or older brings and uses their cell phone every trip to the bathroom. This is a qualitative variable because it describes a characteristic or attribute (yes/no response about a behavior) rather than a numerical quantity.

Answer:

The population is all adults 19 years of age or older. The variable of interest is “whether an adult 19 years of age or older brings and uses their cell phone every trip to the bathroom” and it is qualitative because it describes a non - numerical characteristic (a behavior attribute).