The following conclusion from a statistical study appeared in the article "Is Marriage Becoming Irrelevant?": "Fewer
U.S. adults now than in past years believe it is 'very important' for couples who have children together to be married.
Currently 29% say it is very important that such a couple legally marry, down from 38% who held this view in 2013
and 49% in 2006." Indicate whether the study is an observational study or an experiment. Give a brief explanation
for your choice
(a) This is an observational study because the researchers recorded how many married and unmarried couples
had children.
(b) This is an observational study because the researchers recorded responses to a survey. No adults were
assigned to different experimental groups.
(c) This is an experiment because the researchers compared the changes in opinion over multiple time
periods.
(d) This is an experiment because the researchers conducted different treatments on married and unmarried
couples
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(b) This is an observational study because the researchers recorded responses to a survey. No adults were assigned to different experimental groups.
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