The report “Digital Democracy Survey” (DeloitteDevelopment LLC, 2016, deloitte.com/us/en  .html, retrieved November 30, 2016) says that 69% of U.S. teens access the social media from a mobile phone. Suppose you plan to select a random sample of students at the local high school and will ask each student in the sample if he or she accesses social media from a mobile phone. You want to determine if there is evidence that the proportion of students at the high school who access social media using a mobile phone differs from the national figure of 0.69 given in the Nielsen report. What hypotheses should you test?