An education company representative, speaking on a local news station, has advocated that high school students download a particular app on their phone. The individual cited a study of 800 randomly selected high school junior and senior students that reported that students who downloaded the app on their phones, on average, scored 50 points higher on a standardized test than those who did not download the app. Which of the following statements is correct? 0 Because downloading the app seems to improve standardized test scores for high school students, the app should be effective for middle school students. 0 Downloading the app will cause a student to score higher on an AP Statistics exam. 0 The study was an experiment rather than an observational study. 0 The sample size of the study was too low to determine a result