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9 November, 19:29

Use the empirical rule to solve the problem. ed's monthly phone bill is normally distributed with a mean of $65 and a standard deviation of $11. what percentage of his phone bills are more than $76?

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  1. 9 November, 19:43
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    By the empirical rule, 84% of the distribution is below one standard deviation above the mean.

    16% of Ed's monthly phone bills are more than $76.
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