USA Today (February 16, 2012) reported that the percentage of U.S. residents living in poverty was 12.5%

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USA Today (February 16, 2012) reported that the percentage of U.S. residents living in poverty was 12.5% for men and 15.1% for women. These percentages were estimates based on data from large representative samples of men and women. Suppose that the sample sizes were 1,200 for men and 1,000 for women. You would like to use the survey data to estimate the difference in the proportion living in poverty for men and women.
a. Answer the four key questions (QSTN) for this problem. What method would you consider based on the answers to these questions?
b. Use the five-step process for estimation problems (EMC3) to compute and interpret a 90% large-sample confidence interval for the difference in the proportion living in poverty for men and women.
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