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According to a government energy agency, the mean monthly household electricity bill in the United States in 2011 was $110.10. Assume the amounts are normally

According to a government energy agency, the mean monthly household electricity bill in the United States in 2011 was $110.10. Assume the amounts are normally distributed with standard deviation $18.00.

What is the probability that a randomly selected household had a monthly bill less than $110.

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