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Based on a 2007 survey of U.S. households (see www.census.gov), 87% (out of 3060) of males in Massachusetts (MA) have health insurance.

a) Examine the conditions for constructing a confidence interval for the proportion males in MA who had health insurance.

b) Find the 95% confidence interval for the percent of males who have health insurance.

c) Interpret your confidence interval.

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