Example 1: Adopting a Child in the US
A survey of 1,000 American adults conducted in January 2013 stated that "44% say it's too hard to
adopt a child in the US." The survey goes on to say that "The margin of sampling error is +/-3
percentage points with a 95% level of confidence."
a). What is the relevant sample statistic? Give appropriate notation and the value of the
statistic.
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b). What population parameter are we estimating with this sample statistic?
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c). Use the margin of error to give a confidence interval for the estimate.
