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According to the National Center for Health Statistics, in December 2012, 60% of U. S. households had a traditional landline telephone, 890 of households had cell phones, and 51% had both.7 Suppose we randomly selected a household in December 2012. What's the probability that the household has a traditional landline telephone or a cell phone?

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According to the National Center for Health Statistics, in December 2012, 60% of U. S. households ha...
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