In a survey conducted by a reputable marketing agency 253 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 Click here to view the standard normal distribution table page 1 Click here to view the standard normal distribution table page 2 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 OA The sample is the adults 19 years of age or older Type a whole number OB The sample is all adults with a cell phone OC The sample is all adults OD 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 OA The population is the Type a whole number OB The population is all adults OC The population is all adults 19 years of age or older OD The population is all adults with a cell phone b What is the variable of interest in this study Is it qualitative or quantitative The variable of interest is adults 19 years of age or older 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 p 0 Round to three decimal places as needed This variable is d Explain why the point estimate found in part c is a statistic Explain why it is a random variable What is the source of variability in the random variable Why is the point estimate found in part c a statistic OA It is information obtained from a survey OB It is being used to make inferences OC Its value is based on a sample OD The sample size is large