A report from 2012 states that 45% of American adults were obese. In this report, adults were considered to be 20 years of age or older.     Given the data above, and that there are 213,710,000 adults in America, about how many of the American adults (20 and over) were obese? Round to the nearest hundred

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A:

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A:

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A:

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A:

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A: Solution

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A:

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A:

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A:

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.