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The Wisconsin Department of Transportation is conducting a study to determine if seat belt use is...

The Wisconsin Department of Transportation is conducting a study to determine if seat belt use is the same in Wisconsin as it is in the neighboring state of Minnesota. Samples of 400 drivers from each state were randomly selected. Of those surveyed, 288 of the Wisconsin drivers and 259 of the Minnesota drivers reported that they always wore their seat belt while driving. Construct the 90% confidence interval for the difference of proportions?

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Math   Statistics-And-Probability   
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