Advice columnist Ann Landers once asked her divorced readers whether they regretted their decision to divorce. She received

Question

Advice columnist Ann Landers once asked her divorced readers whether they regretted their decision to
divorce. She received approximately 30,000 replies. Of the 30,000, about 23,000 came from women. Nearly
75% said they were glad they divorced. Of these, most said they wished they had divorced sooner.
Which is the most accurate statement about the survey?
The results are believable, so the survey is not biased.
This sample is large (approximately 30,000) so the results are representative of the population of
divorced people in the U.S.
This survey is biased by voluntary participation and probably overestimates that percentage who
are glad they divorced.
This is a convenience sample and is biased by an unequal number of males and females.

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