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bradford electric illuminating company is studying the relationship between kilowatt-hours (thousands) used and the number of rooms in a private single-family residence. a random sample of 10 homes yielded the following. number of rooms kilowatt-hours (thousands) number of rooms kilowatt-hours (thousands) 12 9 8 6 9 7 10 8 14 10 10 10 6 5 5 4 10 8 7 7 click here for the excel data file a. determine the standard error of estimate. (round your answer to 3 decimal places.)