Walking Dogs Is Sending Older People to the ER, Study Says" describes a study that analyzed data from hospital emergency departments throughout the United States from 2004 to 201 + The researchers found over 32,000 cases of fractures among people 65 and older that were associated with walking dogs. They also found that these cases were becoming more frequent over time Indicate whether the study is an observational study or an experiment. Give a brief explanation for your choice. (Hint: See Examples 1.2 and 1.3.) O This is an experiment because all subjects were adults 65 and older. The only difference in the groups is if the subject was walking a dog. This is an experiment because the researchers obtained data gathered by hospital emergency departments. This is an observational study because the researchers administered a survey to older adults, but they were not assigned treatments. This is an observational study because the researchers analyzed data from hospital emergency departments. No older people were assigned treatments. Need Help? Read It Submit Answer 3. [-/2 Points] DETAILS PECKSTAT3 1.2.004. MY NOTES In a survey of 2,500 U.S. adults, 68% responded that they were confident that "smart homes" will be as commonplace as smartphones within 10 years. + Indicate whether the study is an observational study or an experiment. Give a brief explanation for your choice. (Hint: See Examples 1.2 and 1.3.) This is an observational study because the researchers observed how many of the 2,500 adults have smartphones. This is an experiment because the adults were assigned to different experimental groups and then the researchers recorded responses to questions on a survey. This is an observational study because the researchers recorded responses to questions on a survey. No adults were assigned to different experimental groups. Adults were randomly selected for the survey.