Confidence interval for the proportion of all residents


Discussion:

Q: A sociologist is studying the prevalence of crime in one major city. In a sample of 225 randomly selected residents, 60 say that they have been victimized by a criminal. Based on this sample, construct a 95% confidence interval for the proportion of all residents in this city who have been victimized by a criminal. Then complete the table below.

A. What is the lower limit of the 95% confidence interval?

B. What is the upper limit of the 95% confidence interval?

 

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Basic Statistics: Confidence interval for the proportion of all residents
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