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Apply the 68-95-99.7 rule to answer the question. The amount of Jen's monthly phone bill is normally distributed with a mean of $50 and a

Apply the 68-95-99.7 rule to answer the question.

The amount of Jen's monthly phone bill is normally distributed with a mean of $50

and a standard deviation of $12. What percentage of her phone bills are between $14 and $86?

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