The U.S. Energy Information Agency reported that the mean monthly household electric bill in the United States

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The U.S. Energy Information Agency reported that the mean monthly household electric bill in the United States in a recent year was \($110.14\). Assume the amounts are normally distributed with standard deviation $20.00.

a. Find the 7th percentile of the bill amounts.

b. Find the 62nd percentile of the bill amounts.

c. Find the median of the bill amounts.

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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