Selecting Appropriate Inference Procedures: Categorical Data Practice Test

A school district wants to know whether a new text-message reminder system changes the proportion of parents who attend parent-teacher conferences. Two similar middle schools are chosen: one uses reminders (n = 180 parents invited) and the other does not (n = 200 parents invited). Attendance is recorded as Yes/No, and the counts are 108 Yes in the reminder school and 90 Yes in the no-reminder school. Which inference procedure is most appropriate to determine whether the reminder system is associated with a different attendance rate?

A company compares customer satisfaction (Satisfied/Not Satisfied) between three store locations (North, Central, South). A random sample of customers from each location is surveyed and the results are summarized in a $3\times 2$ table of counts. The company wants to know whether satisfaction depends on location. Which inference procedure is most appropriate?