A cleaning service sends crews to residential homes on either a once-a-month or

Question

A cleaning service sends crews to residential homes on either a once-a-month or twice-a-month schedule, depending on the customer's preference. The owner would like to predict the amount of time (in minutes) required to clean a house based on the square footage of the house, the total number of rooms in the house, whether or not the household has children, and the frequency of the cleaning schedule. Data from randomly selected homes are given in the accompanying table. Complete parts a through d below. EEB Click the icon to view the data table.

Explanation / Answer

The regression model will be

y_hat = 103.7284 - ( 0.004*x1) + (4.236*x2) + (25.985*x3) - (2.019*x4)

where

x1 = Squar feet

x2 = Rooms

x3 = Children

x4 = Frequency

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