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You want to know if smoking rates are different in your state (call this population...

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Basic Math

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You want to know if smoking rates are different in your state (call this population 1) and your sister's state (call this population 2). Test this at the 5% level of significance. Suppose that random samples showed that 90 of 500 in your state were smoker's and 70 out of 500 in your sister's state were smokers.

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