The North Valley Real Estate data reports information on homes on the market. 20 points picturelick here for the Excel Data File Let selling price be the dependent variable and size of the home the independent variable. Use the 0.05 significance level. a-1. Determine the regression equation. (Negative answers should be indicated by a minus sign. Round your answers to 2 decimal places.) a-2. Estimate the selling price for a home with an area of 2,200 square feet. (Round your answer to 2 decimal places.) Selling prow a-3. Determine the 95% confidence interval for all 2,200-square-foot homes. (Round your answers to 3 decimal places.) a-4. Determine the 95% prediction interval for the selling price of a home with 2,200 square feet. (Round your answers to 3 decimal places.)