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A city planner wants to estimate the average monthly residential water usage in the city. He...

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Statistics

A city planner wants to estimate the average monthly residentialwater usage in the city. He selected a random sample of 40households from the city, which gave the mean water usage to be3411.10 gallons over a one-month period. Based on earlier data, thepopulation standard deviation of the monthly residential waterusage in this city is 387.70 gallons. Make a 95% confidenceinterval for the average monthly residential water usage for allhouseholds in this city.

Round your answers to two decimal places.

_____ to_____  gallons

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