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3 3 3 18 6. [20 points] The following data give the selling price, square footage, number of bedrooms, and age of houses that have sold in a neighborhood in the past 6 months. Develop a multiple- regression model to predict selling price based on the square footage, number of bedrooms, and age. Use this to predict the selling price of a 10-year-old, 2,000-square-foot house with three bedrooms. SELLING PRICE SQUARE AGE ($) FOOTAGE BEDROOMS (YEARS) 84,000 1,670 2 30 79,000 1,339 2 25 91,500 1,712 30 120,000 1,840 40 127,500 2,300 132,500 2,234 145,000 2,311 164,000 2,377 7 155,000 2,736 10 168,000 2,500 172,500 2,500 174,000 2,479 3 175,000 2,400 177,500 3,124 184,000 2,500 195,500 4,062 4 10 195,000 2,854 3 3 3 30 3 19 mm 3 4 3 1 4 3 3 3 1 4 NO 3