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Probablity of telephone customers using a particular service provider

The nation's largest cell phone service provider, with 36 million subscribers out of a total of 148 million cell phone users in the U.S. is XYZ company. If six cell phone users are randomly selected on the street, what is the probability that at least one of the is a XYZ subscriber?

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Prob of using XYZ = 36 / 148 ( total users of XYZ / Total cell phone users)

If 6 cell phone ...

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There is a detailed solution provided about probability in statistics.