In Exercise 4, we saw that 4% of people think the trend of more single women having children is a "good thing."
a) Are the conditions for constructing a confidence interval met?
b) How many people would need to be surveyed for a 95% confidence interval to ensure the margin of error would be less than 3%?
Exercise 4
In a 2010 Pew Research study on trends in marriage and family, 4% of randomly selected respondents said that the trend of more single women having children is "a good thing." The 95% confidence interval is from 2.9% to 5.1% (n = 1229).