kmarks People Tab Window Help erm Exam X S Scannable Document X 5 Midterm-LopezYadira (1). x G how to 5135/quizzes/68604 A gerontologist is interested in studying mental illness and mental health service usage among the elderly population in the United States. She wants to find out what proportion of adults over 65 have, in the past or present, taken psychiatric medication for mental health issues. She is hoping to construct a one- proportion 95% confidence z-interval to compare the proportion of elderly against the general US population proportion of 16.4%