Na survey conducted by a reputable marketing agency, 239 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. (a) 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 o a. the sample is all adults o b. the sample is all adults 19 years of age or older. ° c. the sample is the adults 19 years of age or older. (type a whole number.) od. the sample is all adults with a cell phone. determine the population of interest. select the correct choice below and, if necessary, fill in the answer box within your choice. oa. the population is the adults 19 years of age or older. (type a whole number.) o b. the population is all adults with a cell phone. ° c. the population is all adults 19 years of age or older. d. the population is all adults (b) what is the variable of interest in this study? is it qualitative or quantitative? the variable of interest is this variable is ▼| because (c) based on the results of this survey, obtain a point estimate for the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom click to select your answers)