Submit Answer [-/2 Points] DETAILS PECKSTAT3 1.2.004. 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 c study or an experiment. Give a brief explanation for your choice. (Hint: See Examples 1.2 and 1.3.) O 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.