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Determine the regression equation

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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 (12,9,14,6,10,8,10,10,5,7), Kilowatt-Hours (thousands) (9,7,10,5,8,6,8,10,4,7).

a) Produce a scatter diagram b) Determine the regression equation c) Determine the number of kilowatt-hours, in thousands for a six-room house.

d) Determine the standard error of estimate. e) Suppose a large sample is selected (instead of just 10). About 95% of the predictions regarding kilowatt-hours would occur between which two values?

Reference no: EM132902166

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