Question

past research suggests that students who study with fewer distractions (internet, cell phone, etc.) tend to get higher grades. which of the following is the best scenario for being able to generalize this finding to the population of all students?

Answer 1

=a study published in 2011 in The Proceedings of the National Academy of Sciences, researchers randomly assigned 120 elderly men and women who volunteered to be a part of this study (average age mid-60s) to one of two exercise groups. One group walked around a track three times a week; the other did a variety of less aerobic exercises, including yoga and resistance training with bands. After a year, brain scans showed that among the walkers, the hippocampus (part of the brain responsible for forming memories)had increased in volume by about 2% on average; in the others, it had declined by about1.4%.

Step-by-step explanation: