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Extracted text: (f) Suppose you and your business associates rent a store, get a bank loan to start up your business, and do a little research on the size of your sales district and the number of competing stores in the district. If x, = 2.8, X3 = 250, x4 = 3.1, x5 confidence interval for your forecast (if your software produces prediction intervals). (Use 2 decimal places.) 7.3, and x, = 2, use a computer to forecast x, = annual net sales and find an 80% %| %| forecast lower limit upper limit (g) Construct a new regression model with x4 as the response variable and x,, x,, X3, X5, and x6 as explanatory variables. (Use 2 decimal places for the intercept, 4 for X1' 5 for Хз and 3 otherwise.) X4 X1+ X2+ X3+ X5+ X6