(Type a whole number) OD. The sample is all adults with 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 all cell phone users. B. The population is all adults. OC. The population is the (Type a whole number) 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 bringing one's cell phone every trip to the bathroom. This variable is qualitative with two outcomes because individuals are classified based on a characteristic (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. adults 19 years of age or older. (Round to three decimal places as needed.)

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