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Question: It is known that the household income of a small town has a mean of...

Question: It is known that the household income of a small town has a mean of $48,000 and a standard deviation of $12,000. Assuming household income is normally distributed,
   a. what percentage of the households earn more than $84,000?
   b. Solve the same problem by applying the empirical rule. Provide a clear explanation.

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